(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Solve for indefinite integral of

(7x^3)/sqr(4+x^2)(dx)

2. Relevant equations

I just can't seem to find the right solution.

3. The attempt at a solution

First of all, we can just factor the 7 out of the integral for now since it is only a constant.

the inverse square root of (4+x^2) looks like arctan(x/2).

So I set 1/(4+x^2) up as dv, and so V would equal arctan(x/2). U is then x^3, and du is 3x^2.

However, the integrals just don't seem to simplify. Please help.

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# Homework Help: Help with integration (1) involving integration by parts etc

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