How do I start this integral?
integral from [-2 to 1]
sqrt((x^2)-1) / x dx
oh i mis-read it, its -2 to -1. But I think I can fix it myself.
Also I have a question about how to change the integral bounds when you do a change of variable. What if you change u=cos(x), and the integral bound was -inf to inf, then what would be the new integral bounds?