Consider the following for the two (02) items that follow:

Let the function y = (1 - cos x)^-1 where$x \ne 2n\pi$ and n is an integer

What is ∫ydx equal to? 

where c is the constant of integration.

Direction : Consider the following for the items that follow :

Let $\rm 2\int\frac{x^2-1}{\sqrt{x^2+1}}dx=U(x) V(x)-3\ln \{U(x)+V(x)\}+c$

Direction : Consider the following for the items that follow :

Let $\rm 2\int\frac{x^2-1}{\sqrt{x^2+1}}dx=U(x) V(x)-3\ln \{U(x)+V(x)\}+c$