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Question: hello please help me with this problem thank you for...

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Hello, please help me with this problem. Thank you for your help.

y = 2 cos(x), and the interval is [−4.01, 4.01].

(a) What is the error when using midpoints with 10 subintervals? (Do not round your answer.)

(b) What is the ratio of the left-endpoint approximation error to the midpoint error? (Round your answer to two decimal places.)

Thank you very much.

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