1. The problem statement, all variables and given/known data I am struggling to figure out how one would find the oscillation frequency for a nonlinear system thats experiencing a force such as F = 4x^-2 -2x. 2. Relevant equations 3. The attempt at a solution Im really not sure how to approach it. Obviously you cant use methods for simple harmonic motion, and it doesnt seem like you would be able to model it as a sin wave because its not symmetric. Any tips would be greatly appreciated. Thanks.