Consider the following equation and figure. a = 50 y a y = f(x) 2a x (a) By reading values from the given graph of f, use five rectangles to find a lower estimate and an upper estimate for the area A under the given graph of f from x = 0 to x = 100. A ≈ X (lower estimate) A ≈ (upper estimate) (b) Find new estimates using ten rectangles in each case. A (lower estimate) A = (upper estimate)

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