Answering Service for Software Development, Masters in Mathematics ,Virus Protection and Design.: 2012

Clone laptops, computers and PC Clients Across the Network ( Free Bootable Software )

What is Clonezilla?

You're probably familiar with the popular proprietary commercial package Norton Ghost®. The problem with these kind of software packages is that it takes a lot of time to massively clone systems to many computers. You've probably also heard of Symantec's solution to this problem, Symantec Ghost Corporate Edition® with multicasting. Well, now there is an OpenSource clone system (OCS) solution called Clonezilla with unicasting and multicasting!
Clonezilla, based on DRBL, Partclone and udpcast, allows you to do bare metal backup and recovery. Two types of Clonezilla are available, Clonezilla live and Clonezilla SE (server edition). Clonezilla live is suitable for single machine backup and restore. While Clonezilla SE is for massive deployment, it can clone many (40 plus!) computers simultaneously. Clonezilla saves and restores only used blocks in the harddisk. This increases the clone efficiency. At the NCHC's Classroom C, Clonezilla SE was used to clone 41 computers simultaneously. It took only about 10 minutes to clone a 5.6 GBytes system image to all 41 computers via multicasting!

Features:
Free (GPL) Software.
Filesystem supported: (1) ext2, ext3, ext4, reiserfs, reiser4, xfs, jfs, btrfs of GNU/Linux, (2) FAT12, FAT16, FAT32, NTFS of MS Windows, (3) HFS+ of Mac OS, (4) UFS of FreeBSD, NetBSD, and OpenBSD, and (5) VMFS3 and VMFS5 of VMWare ESX. Therefore you can clone GNU/Linux, MS windows, Intel-based Mac OS, and FreeBSD, NetBSD, and OpenBSD, no matter it's 32-bit (x86) or 64-bit (x86-64) OS. For these file systems, only used blocks in partition are saved and restored. For unsupported file system, sector-to-sector copy is done by dd in Clonezilla.
    LVM2 (LVM version 1 is not) under GNU/Linux is supported.
    Boot loader, including grub (version 1 and version 2) and syslinux, could be reinstalled.
    Unattended mode is supported. Almost all steps can be done via commands and options. You can also use a lot of boot parameters to customize your own imaging and cloning.
    One image restoring to multiple local devices is supported.
    Multicast is supported in Clonezilla SE, which is suitable for massively clone. You can also remotely use it to save or restore a bunch of computers if PXE and Wake-on-LAN are supported in your clients.
    The image file can be on local disk, ssh server, samba server, or NFS server.
    Based on Partclone (default), Partimage (optional), ntfsclone (optional), or dd to image or clone a partition. However, Clonezilla, containing some other programs, can save and restore not only partitions, but also a whole disk.
    By using another free software drbl-winroll, which is also developed by us, the hostname, group, and SID of cloned MS windows machine can be automatically changed.

Minimum System Requirements for Clonezilla live:

    X86 or x86-64 processor
    196 MB of system memory (RAM)
    Boot device, e.g. CD/DVD Drive, USB port, PXE, or hard drive

Limitations:

The destination partition must be equal or larger than the source one.
Differential/incremental backup is not implemented yet.
Online imaging/cloning is not implemented yet. The partition to be imaged or cloned has to be unmounted.
Software RAID/fake RAID/firmware RAID is not supported by default. It's can be done manually only.
Due to the image format limitation, the image can not be explored or mounted. You can _NOT_ recovery single file from the image. However, you still have workaround to make it, read this.
Recovery Clonezilla live with multiple CDs or DVDs is not implemented yet. Now all the files have to be in one CD or DVD if you choose to create the recovery iso file.

License:

Clonezilla itself is licensed under the GNU General Public License (GPL) Version 2. However, to run Clonezilla, a lot of free and open source software, e.g. the Linux kernel, a mininal GNU/Linux OS, are required.

Which Clonezilla Shall I Use ?

Clonezilla Live: Clonezilla live allows you to use CD/DVD or USB flash drive to boot and run clonezilla (Unicast only)
Clonezilla SE: Clonezilla SE is included in DRBL, therefore a DRBL server must first be set up in order to use Clonezilla to do massively clone (unicast, broadcast and multicast are supported)

Download

Hidden Meaning in Xp

1. Go to Control Panel, then Display.
2. Select "3D flying objects" in Screensavers.
3. Click "Settings".
4. Than select "Textured flag" in Style.
5. Click OK without selecting any texture.
6. Click Preview. You must get the answer!

Original Post

Open Question: Complex question about tangents/normals of a graph?

Find the equations of the tangent and the normal to the graph with equation y = (1/x) - (4/x^2) at the points where x = 1 and x = 8.

How do you work this out? PLEASE HELP!

Thanks in advance :)

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Open Question: A baseball player's batting average is .254 (254 hits per 1000 at bats).?

3 times 52 is 156 at bats. Multiply that by .254 and you'll have your answer.

I'll let you take it from here.

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Open Question: Describe the steps you would use to solve this problem.?

40mm = 8m

32mm = 6.4m

8 X 6.4 = 51.2 m^2

1 m = 1.09361 yards

1 sqm = 1.09361 X 1.09361 sq yards

1.09361 X 1.09361 X 10.89 = 13.02 $

ANSWER

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Open Question: Can someone please help me factorize this problem?

ANSWER:
(-x - 2) * (4y - 3) = 3x -8y -4xy +6

But HOW do you get it?

Actually, the easiest way is to use one of the many factoring calculators you find on the internet. Just Google on "factoring calculator," and you'll find a raft of them, mostly free. Try a few. Pick one you like.

But, if you MUST be traditional, here are some clues for solving this by "inspection." That is a great term. It means keep guessing until you get it.

Here, you see the plus six on the end. The only way to get a plus there is to have the signs alike in the two binomials. They must either be both pluses, or both minuses.

Then you see there are a couple minus terms in what you are trying to factor, That means there is at least one minus sign somewhere. And you know already the signs are alike. So,that proves that the signs in BOTH your binomials will be negative, because you couldn't get a negative in the product AND a positive final number any other way.

So far, you have in your mental picture something like this:

(aaa - bbb) * (ccc - ddd)

Now, bbb times ddd must equal 6. Don't waste time with 1 and 6, because the 3 in front of the x tells you 6 would be impossible; it must be 3, and aaa must be -x in order to make the positive 3x in the expression you're factoring. So, keeping up with your absolutely brilliant logic:

(-x - 2) * (ccc - 3)

It's downhill from here. ccc must be some number of y's that make -8y when multiplied by -2. Duhhhh... Let's try 4y. Bingo! It works.

Checking it out:

(-x - 2) * (4y - 3) = 3x -8y -4xy +6

Okay, go make popcorn.

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Open Question: Algebra question: Method explaining?

There are two distinct methods to factoring 64 - x^2:

Method #1:

Use difference of perfect squares.

Method #2:

Factor out -1 and then use the difference of perfect squares.

Both methods are correct. Choose one of the methods and factor the expression. In complete sentences explain why you chose the method that you did and include the final factored form of the expression in your explanation.

Can someone please explain what's going on in this question and provide an answer.

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Open Question: Areas of Shapes? Maths homework please help?

A square with a perimeter of 16cm calculate the area

Each shape had a area of 40 cm
calculate the height of the parallelogram if the base is 4cm
Calulate the length if the base of the triangle if the height is 4cm
what might be the values of h,a,and b in the trapezium

Smallest to largest
the size length of this square a is 64 cm
the area of this square b is 64 cm2
the perimeter of this square c is 64 cm

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Open Question: Easy algebra fractions?

1/x+7 + 1/x+4 =

1/x+6 - 1/x+7

5/x+6 + 4/x+4

Sorry, I could not read the content fromt this page.

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Open Question: anyone please answer this for me dy/dt=ky ln 200/y?

dy/dt = k * y * ln(200 / y)
dy / (y * ln(200 / y)) = k * dt
dy / (y * (ln(200) - ln(y))) = k * dt

u = ln(200) - ln(y))
du = -dy / y

-du / u = k * dt

Integrate

-ln|u| = kt + C
ln|u| = -(kt + C)
u = e^(-kt + C)
ln(200 / y) = e^(-(kt + C))

ln(200 / 20) = e^(-C)
ln(10) = e^(-C)
1 / ln(10) = e^(C)
-ln(ln(10)) = C

ln(200 / y) = e^(-(kt - ln(ln(10))))
ln(200 / y) = e^(ln(ln(10)) - kt)
ln(200 / y) = ln(10) * e^(-kt)

ln(200 / 48) = ln(10) * e^(-3k)
ln(25/6) = ln(10) * e^(-3k)
e^(3k) = ln(10) / ln(25/6)
3k = ln(ln(10) / ln(25/6))
k = (1/3) * ln(ln(10) / ln(25/6))

ln(200 / y) = ln(10) * e^((-1/3) * ln(ln(10) / ln(25/6)) * t)
ln(200 / y) = ln(10) * (ln(10) / ln(25/6)) * e^(-t/3)
ln(200 / y) = ln(10)^2 * e^(-t/3) / ln(25/6)

t = 15

ln(200 / y) = ln(10)^2 * e^(-5) / ln(25/6)
200 / y = e^(ln(10)^2 * e^(-5) / ln(25/6))
y / 200 = 1 / e^(ln(10) * ln(10) * e^(-5) / ln(25/6))
y = 200 / e^(ln(10)^2 / (e^(5) * ln(25/6)))
y = 195.05569516562951956450191705787

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Open Question: How to use Riemann sums for this expression?

Let f(x)= 2 + x^3 , 1 less then or equal to x less than or equal to 4. Use the idea of Riemann sums to find an expression for the area under the graph of f as a limit. You do not need to evaluate the limit.

Find the 3rd and 6th approximations of the sum in part a.

Please help. I cannot figure this out.

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Open Question: Let F(x) = ʃ t-3 / t^2+7 dt (from 0 to x) for -oo <x<oo?

I assume you mean F(x) = ? (t-3) / (t^2+7) dt (t = 0 to x) ---> don't forget parentheses

F'(x) = (x-3) / (x^2+7)

F''(x) = (1*(x^2+7) - (x-3)(2x)) / (x^2+7)^2
F''(x) = (-x^2+6x+7) / (x^2+7)^2
F''(x) = -(x+1)(x-7) / (x^2+7)^2

F has minimum value where F'(x) = 0 and F''(x) > 0

F'(x) = 0
(x-3) / (x^2+7) = 0
x = 3

F''(3) = -(3+1)(3-7) / (3^2+7)^2 = 16/16^2 = 1/16 > 0

Minimum value at x = 3

F is increasing when F'(x) > 0
(x-3) / (x^2+7) > 0
x - 3 > 0 . . . . . . since (x^2+7) > 0 for all x
x > 3

F is decreasing when F'(x) < 0
x < 3

Increasing on interval (3, 8)
Decreasing on interval (-8, 3)

F is concave up when F''(x) > 0
-(x+1)(x-7) / (x^2+7)^2 > 0
-(x+1)(x-7) > 0 . . . . . . since (x^2+7) > 0 for all x
-1 < x < 7

F is concave down when F''(x) < 0
x < -1 or x > 7

Concave up on interval (-1, 7)
Concave down on intervals (-8, -1) U (7, 8)

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Open Question: Integral Problem! 10 Points Go!?

I've got: Integral from pi/4 to Infinity of (4+cos (4x))/(x^3)dx

This is an example of Convergence, but I don't know how to solve it. Any help, even some kind of basic outline is appreciated. Better yet, if you can lead me through all the steps, that would help out a lot. Thanks SO much!

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Open Question: MATHS QUESTION PLEASEEEE HELPPP ME!! IM BEGGING!!?

It is noticed that the height of a cone is twice its radius and that the cones volume is exactly 1000cm63. Calculate the dimensions of the cone correct to one decimal place.

please explain your answer thankyou

View the original article here

Open Question: Newton's Second and Third Law Derivations?

Start with Newton's laws F = ma and F_12 = F_21
Show that if two bodies exert a force on each other, ?p_1 = -?p_2

How do I do this?

Also, I think I need to somehow derive the following equation from those:

?P = (m_A * v_fA + m_B * v_fB) - (m_A * v_iA + m_B * v_iB)

Where:
m_A = mass of cart A
m_B = mass of cart B
v_fA = final velocity of cart A
v_fB = final velocity of cart B
v_iA = initial velocity of cart A
v_iB = initial velocity of cart B

Context: This is for a physics lab report due today. In the lab we took two carts (A and B) and pushed them into each other and gathered the initial and final velocities of both carts. We are trying to determine whether or not momentum is conserved.

Any help you could provide will be greatly appreciated. Also if you have any tips for writing this lab report, please include those. Thank you so much!

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Open Question: Please help math urgent.?

interval notation is simple:
use round brackets for infinity and point that are not included (strictly greater or smaller)
use square bracket for points that are included (greater than or equal, less than or equal)
combine multiple intervals using union

x = -2 and x < 4
since -2 is included, and 4 is not we get
[-2,4)

x < -2 or x = 3
here -2 is not included but 3 is
(-infinity, -2)U[3,infinity)

-4 < a + 2 < 10
this is two inequalities, each should be solved separately
first we have:
-4or
a+2>-4
a>-4-2
a>-6
then we also have
a+2<10
a<10-2
a<8

so solution is
(-6,8)
because both -6 and 8 are not included.

last one is
x>=3
x>=6
to satisfy both, we use x>=6
which is
[6,infinity)

note that 6 was included (square bracket)

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Open Question: What is the formula to find center coordinates of a square?

let's say the vertex is A(0, 0)
and the length of side is 4

other points would be
B(4, 0)
C(4, 4)
D(0, 4)

the diagnonals are
BD: (4, 0) (0, 4)
and
AC: (0, 0) (4, 4)

midpoint of BD (E)

xE = (4 + 0) / 2
xE = 2

yE = (0 + 4) / 2
yE = 2

E(2, 2)

Midpoint of AC (E)
also equals
E(2, 2)

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Open Question: Potential zeros of polynomials?

Determine the maximum numbers of real zeros each polynomial can have. Then list the potential zeros.

1. 6x^4-x^2+2

2. -6x^3-x^2+x+10

Thanks!

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Open Question: Visual angle and image size on the retina?

Please tell me the formulas to figure out the answers for each of the problems so that I know how to do them:

Suppose that the focal length of the eye (the distance from the lens to the retina) is 2 cm. Your blind spot subtends an angle of roughly 5 deg. How big is the blind spot (in cm) on your retina? (Use the focal length as the distance in the visual angle equation).

The fovea is roughly 2 deg of visual angle. What is the diameter of the fovea in cm? (Use 2 cm again as the focal length).

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Open Question: use given zero to find the remaining zeros of the polynomial?

use given zero to find the remaining zeros of the polynomial?

g(x) = x^3 + 3x^2 + 25x + 75 Zero: -5i

if one zero is (- 5i), then (5i) is also a zero

(x + 5i)(x - 5i) = x^2 + 25

long division by (x^2 + 25) yields the quotient: (x + 3)

the remaining zero is: x = - 3

check

one problem at a time.

@ƒ

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Open Question: Where does h'(x) = 0.14 ?

Consider the graphs below. Both functions have a sharp corner at x=50.

m(x)
https://instruct.math.lsa.umich.edu/webwork2_course_files/ma115-042-f12/tmp/gif/kostakoe-3736-sethomework19prob12image1.png

n(x)
https://instruct.math.lsa.umich.edu/webwork2_course_files/ma115-042-f12/tmp/gif/kostakoe-3736-sethomework19prob12image2.png

Let h(x)=n(m(x)). Find a point x where h'(x)=0.14
x = ????

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Open Question: What coordinates satisfy this slope?

Technically, your question doesn't make any sense, since a coordinate cannot have a slope, only a line can.

The formula 'y=mx+b' describes a straight line, where 'm' is the slope, and 'b' is the y-intercept.

Any two lines with the same slope will be parallel to each other, so any line whose 'y=mx+b' formula has the same 'm' value and a different 'b' value will satisfy the requirements of your questions.

So, for instance:

y = 10x + 1 and y = 10x + 2 are the formulas for two parallel lines with a slope of 10.

To get coordinates on these lines, just plug in values for 'x' and solve for 'y'. For instance:

(0,1), (1,11), and (2,21) are on the line 'y = 10x + 1', and
(0,2), (1,12), and (2,22) are on the line 'y = 10x + 2'.

(:-o)

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Open Question: What data ranges can I create for this data, pic included?

http://www.flickr.com/photos/89180248@N07/8122574897/in/photostream

That's how my spread sheet in excel 2010 looks like and I need to create 7 data ranges for the column that says average dollar amount of each scholarship

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Open Question: Simple Ratio question help?

2/5 = x/45

5x = 90

x = 18 ANSWER

Sorry, I could not read the content fromt this page.

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Open Question: Volume of a cone. please help me!!!?

It is noticed that the height of a cone is twice its radius and that the cones volume is exactly 1000cm63. Calculate the dimensions of the cone correct to one decimal place.

please explain your answer thankyou

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Open Question: 3x +y^2 = 4. Is the graph of a function? True or False. Please help!!!!!!!!!?

y² = 4 - 3x
y = v(4 - 3x)

? Every element in X is related to Y
& No element in X has two or more relationships

Statement is TRUE.

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Open Question: Calculate the visual angle (in degrees) for each of the following stimuli.?

Please tell me the formulas to each so that I learn them and can get the correct answers:
Calculate the visual angle (in degrees) for each of the following stimuli.

A person whose height is 2 m, standing 100 m away (m = meters).

The same person standing 200 m away.

A child whose height is 1 m, viewed from 100 m.

The same child viewed from 50 m.

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Open Question: Determining if a function is even, odd, or neither?

you just need to answer the question of whether
f(-x)= - f(x) if so then odd;
f(-x)=f(x) if so then even
otherwise neither

Here f(-x)=1/(-2x)= - 1/2x = - f(x); so odd

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Open Question: f(x)=3x-1 and g(x)=(x+1)/(3) are inverses of eache other? true or false?

PLEASE HELP!!!

f(x)=3x-1 and g(x)=(x+1)/(3) are inverses of eache other? true or false?????

Sorry, I could not read the content fromt this page.

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Open Question: 6a^2b + 9ab^2? maths revision please help?

Factor out the common factor of (3ab)

3ab(2a + 3b)

Sorry, I could not read the content fromt this page.

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Open Question: Calculate the distance or size (in meters) of each of the following objects:?

Please tell me the formulas so that I can learn how to do the following calculations:

Calculate the distance or size (in meters) of each of the following objects:

What is the height of a person standing 100 m away, whose visual angle is 1 deg?

What is the viewing distance if a coin that is 2 cm in diameter and forms a visual angle
of 2 deg?

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Open Question: Exponents, help me please!?

(3x^-2*y)^3*(2x)^4
-------------------------
6^3*y^2

Why is the answer 2y/x^2 and not 2x^-2y?

Sorry, I could not read the content fromt this page.

View the original article here

when finding zeros from a factored equation...?

lets say i'm finding the zeros... and my factored equation is -1(x+6)(x-2)
i know x=-6,2. But what about the -1 out front?
or if I have
3(x+2)(x-3) ==>what about the 3 out front?
do those numbers count as a zero?

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Help with Cellular Automata?

In one-dimensional cellular automata, each rule is a static eight-bit number that represents each three-cell combination that produces an "alive" state. In two-dimensional cellular automata, the rule can be a 512-bit number because the nine-cell neighborhood has 512 possible combinations, and each bit in the rule's number determines whether each combination produces an alive (1) or dead (0) state. Because of such complexity and the symmetry of the 2-D rules, the representation is simplified by stating how many cells in a neighborhood cause a cell to be born, to continue living, or to die. In the case of Conway's Game of Life, the rule is 3 neighbors must be alive in order for a cell to come to life, and an alive cell with 2 or 3 alive neighbors will remain alive in the next generation.
I want to find out the 512-bit number that represents this rule. Assuming the middle cell represents the one's place value in each 9-bit combination (it represents the two's place value in one-dimensional CA), what would the rule be? I can't find an online calculator that handles 512-bit numbers, but I believe I've found the formula for it.
3*Sigma(2^(2^a+2^b+2^c)) + Sigma(2^(1+2^d+2^e)),
With 1<=aAnd 1<=d
Multiplying the first half of the equation by 3 is the same as writing it as Sigma(2^(2^a+2^b+2^c) + 2^(1+2^a+2^b+2^c)), which covers three alive neighbors surrounding a cell, whether it is dead or alive. The second half of the equation covers an alive cell with exactly two alive neighbors.
Keep in mind, I've never been formally educated on sigma notation, so I don't know for certain if this covers any combinations I didn't intend or doesn't cover enough. If someone can tell me if it's the correct formula, I'd be very grateful.

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A few Math questions!(: 10 POINTS BEST AWNSER!?

9. What is the vertex form of the equation?
y = x^2 – 6x + 8 (2 points)
13. What is the expression in factored form?
6x^2 + 4x (2 points)
14. What is the expression in factored form?
4x^2 + 11x + 6 (2 points)

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What does interpret the value of the average rate of change mean?

This is my problem and my math book isn't giving me any information about what this question means..
"The graph shows the population P in a small industrial city from 1950-2000. The variable X represents the number of years since 1950."
Graph below points are on X = 20,25,40,50 ; Y= 40,50,40,20
50-
40-
30-
20-
10-
0 ____________________________
--------------10 20 30 40 50
(a) Determine the intervals on which the function P is increasing and on which it is decreasing.
My answer= Increasing [0,20] [20,25] ; Decreasing [25,40] [40,50]
(b) What was the average rate of change of P between X=20 and X=40 ?
My answer = 40 - 40 / 40-20 = 0/20 = 0
(c) Interpret the value of the average rate of change that you found in part (b)
** This is where I am lost. I'm not sure what the question is actually asking, I've done some searching on the internet about the value of the average rate of change, although I think I'm either finding the wrong thing, or not quite catching the concept. Intuitively I consider the fluctuation between the two intervals, but as the past has shown me, intuition and math don't necessarily make good partners ;X

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Why is the answer 2y/x^2 and not 2x^-2*y?

x^(-a) = 1/x^a
x^(-2) = 1/x^2
Therefore, 2y/x^2 and 2x^(-2)y are equal
But often, you will be asked to use positive exponents,
so it's best to answer 2y/x^2

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How do you solve 7+3t over 4 =-t over 8?

This is: ?
(7+3t)/4 = -t/8
If it was the equation above do the following..
multiply both sides with 8 which gives you:
2(7+3t) = -t (get 2 due to (8/4 = 2))
14 + 6t = -t
6t + t = -14
t = -2

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Describe the effect of each number on the graph of f(x) =7 (-1x + 1)^3 +4.?

Describe the effect of each number on the graph of f(x) =7 (-1x + 1)^3 +4.
Match:
7
1
4
-1
3
Match with:
a. shifts the graph up
b. identifies the common graph to be used
c. shifts the graph to the left
d. stretch
e. reflects the graph over the y axis

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differentiation of exponential functions?

you have fraction, note that
[a/b]' = (a'b-b'a)/b^2
in your case a=x
b=e^x
as you know
x'=1
(e^x)' = e^x
so we get
(1*e^x - xe^x)/e^(2x)

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Find all the zeros of each equation.?

1. x^5 – 3x^4 – 15x^3 + 45x^2 – 16x + 48 = 0
A. 3, 4, i
B. 4, –4, i,–i
C, 3, 4, –4, i, –i
D. 3, –4, –i
2. x^3 – x^2 + 5x – 5 = 0
A. i, –i, 1
B. i, –i, –1
C. , –, –1
D. i, 1
3. 7x^2 – 144 = –x^4
A. 3, –3, 4i, 0
B. 3, 4i
C. 3, –3, 4i, –4i
D. –3, –4i

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Given that x²+y²=14x+6y+6,find the largest possible value of the expression E=3x+4y?

x^2-14x +y^2-6y=6
(x-7)^2 +(y-3)^2 = 6+49+9 = 64 = 8^2
this is a circle centre (7,3) radius 8
y = 3 + 8 sin[theta]
x= 7+ 8 cos[theta]
E= 3(7+8cos( theta)) +4 (3 +8 sin[theta])
= 21 +24 cos (theta) + 12 +32 sin (theta)
= 33 +24 cos (theta)+ 32 sin(theta)
dE/ d (theta)= -24sin(theta) +32cos (theta)=0
32cos theta=24sin (theta)
tan (theta) = 32/24 = 4/3
theta = arctan(4/3)
E= 33 +24 cos (arctan(4/3)) + 32 sin(arctan(4/3)
=73

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For a cubic graph, how do you know if it goes below the x axis or above the x axis?

every cubic (or in general, every polynomial of odd order) crosses x-axis.
to find where that happens, you solve for y=0.
for example if you have cubic, it would be ax^3+bx^2+cx+d=0

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Quick! Do arithmetic sequences have to be addition and subtraction?

I am learning about arithmetic sequences, and my book only shows addition and subtraction. Are multipication patterns arithmetic sequences too?
Examples:
I know 2, 4, 6, 8, 10 is an arithmetic sequence. +2
But is 1, 3, 9, 27 an arithmetic sequence too? x3

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Back pain help?!?!?!?!?!?!?!?!?

Don't trust those links. They look like virus links. Well it doesn't sound like something a medical Dr. could help you with. Maybe you should try a chiropractor. I've used them off and on my whole life and they have performed miracles on me.
Truthfully though, it just sounds like you are making your body do something that it's not really good for it. I don't know if you are in a circus or what, but just because your parents did it, doesn't mean it's right for you.
There is also at least one back stretching piece of equipment out there that might help you. Try this site for items you have seen on tv. The one I remember is you lay on your back and put your legs over it like it's a chair or something like that.
Well I can't find it on that site, but I'm still looking. This machine you would put your legs over it and it would automatically move your legs around. I'll keep looking for a while.

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What is wrong with my calf?

About a month ago i kinda strained my calf. However it started poping throughout the month and feeling strained or pain. When im walking down stairs the calf pops and a tendon or something feels out of place and pops in again.
I had a meniscus repair in July. At first i thought it was my knee but it seems to be a muscle between the thigh and my upper side calf in the back of my leg.
Yes im seeing my doctor next week but i would like to see some other opinions first

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How do you prevent/get rid of migraines?

Well first of all you have to find pain relief that will work. I've had headaches my entire life with perfect vision, but didn't even realize they were migraines until I got older and became sensitive to light and noise when I had one. Tylenol always worked for me but now that I'm older, I started just taking 1 or 2 aspirin laying down in a dark room without noise, and putting an ice cold rag on my forehead over and over again. I get almost instant relief from the cold rag and about 20 minutes later it is gone.
My Aunt strangely enough said coke in a bottle cured hers and the only way I can imagine that would work is if whatever is in the coke is what her body is experiencing withdrawal symptoms from.
In my opinion though, carbonated soft drinks are the worst thing you drink at any time but you could try it. They destroy Calcium & some people even use coke to wash clothes. I think I even heard you can clean a toilet with it. Of course if for some reason your body isn't processing calcium properly, I suppose that could help get rid of some of it for you.
Bottom line is everyone is different. If it's not your vision causing them then it's either something you are eating or a structural problem that requires a chiropractor. I've used chiropractors off and on my entire life. They performed miracles on me but they don't help everyone. All you can do is try different things. I'm thinking you could even get an oxygen bottle prescribed by a Dr. and maybe that would help.
Worst headache I ever had my entire life was when i was working in a business while they were redoing a flat roof with tar. Man that stuff is toxic. You don't have oil leaks on your car heating up and venting inside it do you?

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How do you get the limit of x sin (1/x) as x approaches positive infinity?

As my colleague suggested, multiply the numerator and denominator by 1/x
Lim x >>inf xSin(1/x) = Lim x >>inf x(1/x)sin(1/x)/(1/x)
= Lim x>>inf sin(1/x)/(1/x) = Lim a>>0 sin(a)/a
This form of the limit now satisfies l'Hopital's rule's conditions
So your original limit is equal to Lim a>>0 cos(a)/1 = cos(0) = 1

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Solutions For Equations with Square Roots!!!?

Solve the equation x - 7 = v(-11x + 47)
Solve the equation x - 4 = v(-20x - 16)
Solve the equation 4x + 5 = v(61x + 20)
end answer is x=
can have 1,2 or none solutions

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m looking for a good math reference?

Hello people out there. Do you know a good reference for geometry and trigonometry? It'd be nice if the book is easy to read and understand with full of details which I have to learn.
thank you :)

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How many aeroplanes would it take to deport all the immigrants that Labour brought in?

Labour brought in 3 million immigrants during their last term in office.
Assume a plane can carry 250 people.

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Urgent complex numbers question?

a - 2i -1*(7 + bi) = -4 - 8i
a - 2i - 7 - bi = -4 - 8i
a - bi = -4 + 7 - 8i + 2i
a - bi = 3 - 6i
a = 3 and b = 6.

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Word problem, please help!?

if she has 2 and needs 6, she needs 4 liters of x% solution
2 * .3 + 4x = 6 * .46
.6 + 4x = 2.76
4x = 2.16
x = .54
she needs 4 liters of 54% solution

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Use the least-squares method?

y = c d^x
ln y = ln(c d^x) = ln c + x ln d = A + x B
given data (x,y), convert to (x, ln y) then use the usual linear least squares method to find {A,B}
A = ln c
B = ln d
so by finding {A,B} you find {c,d}

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Why is it called two real and equal roots b^2 - 4ac = 0 when the straight line touches the curve at one point?

b^2 - 4ac = 0, also defined as two real and equal roots (TWO ROOTS) but why for its graph, the U parabola or curve touches the line at only one point (ONE)
Two roots on one point? Senseless. But it will make sense when b^2 - 4ac > 0; two real and distinct roots; intersects at two points.

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Simple Interest Sum need Help?

I = Prt
7200 = Pr * 4
1800 = Pr
you need two numbers when multiplied that equal 1800
pick a random interest rate
6%
1800 = .06P
30000 = P
Rs 30000 invested at 6% interest for 4 years
you pick the other and solve

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Find the coordinates of the vertex for the parabola defined by the given quadratic function.?

7. f(x) = 7 - (x + 4)2
a. (7, 4)
b. (-4, 7)
c. (4, 7)
d. (7, -4)
thank you!
Sorry, I could not read the content fromt this page.
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Is there a way to simplify the left hand-side of this algebra problem to solve for Y? ((60/s)/4)*60 = Y?

Well, I'm not sure how simplified you want it considering you have two variables in this equation. It seems you already did part of it with (60/s)*60 = 4y.
Just multiply 60*60 which = 3600 then divide by 4, which gives you 900s = Y
The other way you could do it was write it as (60/4s)*60 = Y
Just divide 60/4 = 15 then multiply by 60 to give you 900s = Y
I don't know what the value of s is or what the equation represents but that is probably as simplified as you are going to get without any more information.

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Differentiation with complex numbers?

Given f(z)= [(4+2i)z/(2-i)z^2 + 9i]^3, find f'(z).I got an answer by doing the chain rule then the quotient rule. Is that what I'm supposed to do? Can someone provide the correct answer so I can compare mine to see if I did it right? ThanksAnswer QuestionBe the first to answer this question.
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I'm looking for a good math reference?

Probability question help!?

Hey there,

I have been faced with this question and I am a little stuck:

An urn initially has one red ball. Persephone uses a device to select n blue balls with
probability (e^−x) x^n)/n!, for n = 0, 1, 2, . . . , and add them to the urn. She then selects
one ball at random from the urn. Show that the probability that she selects the red ball
is (1 − (e^-x) )/ x.

Regards, Seany.

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Calculate the pH of a 0.10 M solution of hypochlorous acid, HOCl .?

Ka of HOCl is 3.5 x 10 ^-8

pH = ?

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What is the distance, in centimeters, between two cities if it takes a microwave 2.13 x 10^-6 day to travel?

2.13 x 10^-6 day to travel from one city to another?

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How to get rid of lower stomach fat?

Okay so i have little to no fat on my stomach except for right under my belly button. So basically my stomach is all toned then just out of nowhere at the bottom of my stomach is a bulge of fat. It's not big, but since im 5'4 and 109lbs it's pretty noticable. It totally prevents me from wearing the chothes i want. If that one freakin bulge was gone i would be able to wear whatever i want. How can I get rid of it????? D:

Btw i go to the gym every other day and do 35 minutes on the cross trainer and crunches on a machine thingyy.

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I am often confused with my unchallenged mind?

I find it difficult to concerntrate because its not that i get distracted its cause
i find it hard to understand anything and everythings a challenge for me because i think its a learning disability. I always have communication problems in speaking with others, and often its irrelevant. And i never really understand. I have a very poor vocabulary.
I am 17 struggling in high school.

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What's wrong with me?

Ok, this is gonna be really hard to explain, but i have these two weird things i do on a daily basis.
1st - whenever i see people, like in town, ill look at them, but when i do, on each person, i blink and breath in through my mouth, then to another person, ill blink and breath in through my mouth. (mouth closed both times)
2nd - I'll take pictures in my head, literally. I'll look at something, if it's something picture-worthy, i'll say "take a picture right now" in my head.
what is wrong with me? is this a disorder? please help me out? thanks!!

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Stress!!!!!!?

lately ive been really stressed and ive noticed that my hair is startiong to fall out in masses

can u tell me anyway to de-stress my self
adn do u noe any home remedies that may help my hair become thick again?

thank youuuuuuu =))

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