# Haha operations of e

1. Jan 27, 2009

hahaha uhhhh operations of e

1. The problem statement, all variables and given/known data
i'm reading this online math help thing, and i can't seem to memorize how/why this is

2. Relevant equations

how did they get this?

edit* how did they get the answer from the left to the right side of the arrow?
3. The attempt at a solution
i know this is prob. the beginner stuff, but i forgot this from a long time ago. and don't worry, this is only one step of the equation, not the whole answer.

Thanks!

2. Jan 27, 2009

### gabbagabbahey

Re: hahaha uhhhh operations of e

Is there a specific step(s) that you don't understand? All they are really doing is integrating both sides of the equation with respect to x and then isolating v(x) after.

3. Jan 27, 2009

### NoMoreExams

Re: hahaha uhhhh operations of e

They multiplied both sides by $$x^4$$

4. Jan 27, 2009

Re: hahaha uhhhh operations of e

yeah, i got the integrating part, but how come in the next step, it went from x^-4 to x^4?

thanks!

5. Jan 27, 2009

### NoMoreExams

Re: hahaha uhhhh operations of e

I just told you, they multiplied both sides by x^4 ... and x^(-4) * x^4 = 1

6. Jan 27, 2009