Approximate the area under the graph of f(x) and above the X-axis with rectangles

Question

Question

f(x) = 3/x+4, from x = 1 to x = 9

Approximate the area under the graph of f(x) and above the X-axis with rectangles, using the following methods with n=4.

(a) Use left endpoints. (b) Use right endpoints. (c) Average the answers in parts (a) and (b)

(d) Use midpoints.

The area, approximated using the left endpoints, is _______ (Round to two decimal places as needed.)

math calculus

Answer 1

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Answer 2

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