1. The problem statement, all variables and given/known data f(x) = x^3 [cos(pi/x^2) + sin(pi/x^2)] for x≠0 2. Relevant equations 3. The attempt at a solution I really am stuck. I've tried squeeze theorem on [cos(pi/x^2) + sin(pi/x^2)], but I can't compute the range. So, I tried doing it individually, squeezing -1 ≤ cos(pi/x^2) ≤ 1, but that doesn't work. Any hints please?