(adsbygoogle = window.adsbygoogle || []).push({}); Need help with a horrible integral!! Dont get scared

1. The problem statement, all variables and given/known data

Prove that

2. Relevant equations

Cosh^{2}-Sinh^{2}=1

3. The attempt at a solution

I have used the subsitution r=2GM/c^{2}Cosh^{2}(x) and the integral is simplified to:

4GM/c^{2}*[tex]\int[/tex]Cosh^{2}(x)dx

Integrating was done in Mathematica but I can't do the simplification needed for the equation to look like the answer.

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# Need help with a horrible integral Dont get scared

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