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orial Exercise Find the absolute maximum and absolute minimum values of f on the given interval. flx) = 4x 18x* 48x + 4, [-2, 5] Step 1 The absolute maximum and minimum values of occur either at a critical point inside the interval or at an endpoint of the interval. Recall that a critical point is a point where '(x) o0 12 =36 =48 [z 0 or is undefined. We begin by finding the derivative of f. We now solve f'(x) = 0 for x, which gives the following critical numbers. (Enter your answers as a comma-separated list.)