1. Find for each of the follownig functions, Be sure to organize your work. Find all the critical numbers. Use Calculus to determine the intervals over which the function increases. . Locate all local extrema and classify each one (local maximum or local minimum or neither). a. f(x) = 3x" + 4x*- 36x x2 b. f(x) = X - 1 c. f(x) = Ln x - x for x > 0