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Approximate the area under the graph of f(x) and above the x-axis with rectangles, using the...
Approximate the area under the graph of f(x) and above the x-axis with rectangles, using the following methods with n = 4. f(x) = 4x + 3 from x = 4 to x = 6
a. Use left endpoints.
b. Use right endpoints.
c. Average the answers in parts a and b.
d. Use midpoints.
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