1. The problem statement, all variables and given/known data integrate sqrt(1-x^-2/3)^1/2. 2. Relevant equations 3. The attempt at a solution The only thing I can think of is u substitution with u = 1 - x^-2/3. Obviously this cannot work because du differs by more than just a constant. I guess I need to somehow factor this equation but I do not know how. I think I can pull out an x^1/3 or something but I'm not sure. Any help would be appreciated.