1. The problem statement, all variables and given/known data Integrate. 1/ [e^x (1-e^(-2x))^1/2] 2. Relevant equations integration by parts 3. The attempt at a solution First I split up the integral so it would be (1/e^-x)[(1/(1-e^-2x)^1/2] Then I set u=e^-x, dv= (1-e^-2x)^-1/2 du= -e^-x For my v I got 2(1-e^-2x)^1/2 but I don't know how to go about with the e^-2x, as in how to finish solving for the v-part. I tried u-substitution and I get another term in the denominator. Then when I tried to differentiate the answer I originally got for v, I did not have anything in the denominator... can anyone help?