Let f x x 4x Then f has two critical numbers One critical number is at x 0 At what x value is the other critical number located Is there a local maximum or a local minimum located at this second critical number O There is a local minimum located at the nonzero critical number O There is a local maximum located at the nonzero critical number f also has two inflection points One is located at x 0 At which z value is the other inflection point located C