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Preview Activity 5.6.1. As we begin to investigate ways to approximate definite integrals, it will be insightful to compare results to integrals whose exact values we know. To that end, the following . 3 sequence of questions centers on ID x2 (bit. a. Use the applet at http:{fgvsu.edufsa9 with the function f(x) = x2 on the window of x values from 0 to 3 to compute L3, the left Riemann sum with three subintervals. b. Likewise, use the applet to compute R3 and M3, the right and middle Riemann sums with three subintervals, respectively. 3 c. Use the Fundamental Theorem of Calculus to compute the exact value of![ = [O x2 dx. d. We define the errorthat results from an approximation of a definite integral to be the approximation's value minus the integral's exact value. What is the error that results from using L3? From R3? From M3? e. In what follows in this section, we will learn a new approach to estimating the value of a definite integral known as the Trapezoid Rule. The basic idea is to use trapezoids. rather than rectangles, to estimate the area under a curve. What is the formula for the area of a trapezoid with bases of length {)1 and E12 and height h? f. Working by hand, estimate the area under f{x) = x2 on [0,3] using three subinteruals and three corresponding trapezoids. What is the error in this approximation? How does it compare to the errors you calculated in {d}