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1. Use a finite approximation to estimate the area under the graph of the given

ID: 2854749 • Letter: 1

Question

1. Use a finite approximation to estimate the area under the graph of the given function on the stated interval as instructed.

f(x) = x2 between x = 4 and x = 8 using an upper sum with four rectangles of equal width.

A. 174

B. 165

C. 126

D. 149

2. Use a finite sum to estimate the average value of the function on the given interval by partitioning the interval and evaluating the function at the midpoints of the subintervals.

f(x) = x2 - 5 on [-3, 7] divided into 5 subintervals

A. 7

B. 12

C. 11

D. 35

Explanation / Answer

1. c

2. for the second exercise a got an estimate of approx of 105, but this is not an option. Please check the options.