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Tutorial Exercise Find the absolute maximum and absolute minimum values of f on the given interval. (x) = 4x - 18x - 48x + 4, [-2, 5] Step 1 The absolute maximum and minimum values of f 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) = 0 or is undefined. We begin by finding the derivative of 7. "(x) = X