84xfor 15x52 1. (+10) Given the graph ofthc function (x) = [4x _ 8 for 2

1. (+10) Given the graph of the function (x) = Compute the shaded area in two different ways: a) by using simple geometric formulas b) by using integration 2. Consider the function f (x) = x 2 8 4x for 4x 8 for 4 2 x 4 a) Find the exact area under the function f (x) for 0 x 6 b) Estimate the area under the function f (x) for 0 x 6 using 3 rectangles and the left endpoint