Project #34713 - Two calculus problems, hyperbolic function/integral

1. Problem 14. (Image 01)

 

This is how others did it, but I don't understand the Hyperbolic Function in the steps. (Image 02)

 

This is how I did it, but I have problems in how to take out the integral. (Image 03)

 

2. This is the problem I don't know how to solve. I just don't know how the person got to the second step in this one. (Image 04)

Subject Mathematics
Due By (Pacific Time) 07/04/2014 12:00 pm
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