Problem 26E

a Find an approximation to the integral 04(x23x)dx using a Riemann sum with right endpoints and n = 8. b Draw a diagram like Figure 3 to illustrate the approximation in part a. c Use Theorem 4 to evaluate 04(x23x)dx. d Interpret the integral in part c as a difference of areas and illustrate with a diagram like Figure 4.

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