Precalculus · Problem 74

Relations and Functions — Stitz & Zeager

Mathematics — Precalculus · graphs-of-functions-extrema

Problem

Use your graphing calculator to approximate the local and absolute extrema of

f(x) = x^4 - 3x^3 - 24x^2 + 28x + 48

. Approximate the intervals on which the function is increasing and those on which it is decreasing. Round your answers to two decimal places.