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What is the order of accuracy of the midpoint rule approximation?

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What is the order of accuracy of the midpoint rule approximation?

(a) Fourth-order

(b) Third-order

(c) Second-order

(d) First-order

I got this question in homework.

I would like to ask this question from Finite Volume Methods in chapter Finite Volume Methods of Computational Fluid Dynamics

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Correct choice is (c) Second-order

Explanation: The midpoint rule is the method which uses the value of the function only at its midpoint to approximate the integration. It is second order accurate. This is the simplest method of approximation.

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