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November 16th, 2013, 03:52 PM   #1
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Help Rearranging an Equation

Hi Guys,

I have been trying to rearrange this equation, but I am having trouble with quarter fraction

A = (4d/(p1-p2))^1/4

I would like to be able to rewrite the equation so it the subject is d

I struggle with the 1/4, when or how to deal with it.

Any help would be great, thanks very much.
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November 16th, 2013, 04:29 PM   #2
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Re: Help Rearranging an Equation

Quote:
Originally Posted by jwalker
Hi Guys,

I have been trying to rearrange this equation, but I am having trouble with quarter fraction

A = (4d/(p1-p2))^1/4

I would like to be able to rewrite the equation so it the subject is d

I struggle with the 1/4, when or how to deal with it.

Any help would be great, thanks very much.
You can do it in 3 steps

1) Raise both sides to the 4th power

2) Multiply both sides by (p1 - p2)

3) Divide both sides by 4

Here's what it looks like







And we are done!

You can eliminate fractional exponents, like 1/4, by raising both sides of the equation to the RECIPROCAL power, in this case 4.

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November 16th, 2013, 09:10 PM   #3
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Re: Help Rearranging an Equation

Quote:
Originally Posted by jwalker
A = (4d/(p1-p2))^1/4
Let k = p1-p2 (easier to "handle")

A = (4d / k)^(1/4)
A^4 = 4d / k
4d = kA^4
d = kA^4 / 4
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