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

Having trouble evaluating:

[tex]\int_{\infty}^{-\infty} \frac{dz}{(z^2+x^2)^(3/2)}[/tex]

2. Relevant equations

Trig sub

[tex] z=xtan(\theta)[/tex]

3. The attempt at a solution

comes down to:

[tex]\int_{x\frac{\pi}{2}}^{-x\frac{\pi}{2}} cos(\theta) d\theta [/tex]

goes to

[tex] sin(\theta)[/tex] from [tex]x\frac{\pi}{2} \longrightarrow -x\frac{\pi}{2}[/tex]

ehh!?

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# Homework Help: Evaluation trig sub

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