Consider the function f(x) = piecewise [(x^3)(cos(1/x)) , x=/=0], [0, x=0]. Use the definition of the derivative at a point to determine if f is differentiable at x=0
I am not sure how to start this question. Am I supposed to plug in x = 0?
I am not sure how to start this question. Am I supposed to plug in x = 0?