1. The problem statement, all variables and given/known data Find the solution when x(1)=2 dx/dt = (x2 - 1) / t 3. The attempt at a solution I got all the variables to separate sides: 1/(x2 - 1) dx = 1/t dt However I don't know how to integrate the LHS to get the correct answer. The answer book says: x = (t2 + 3)/(3 - t2) Is the answer in the book wrong? I don't know how to integrate 1/(x2 - 1) without using the trig identity which isn't in the answers..