Evaluate using integration by parts.
Answer and explanation
Correct answer: C.
- Step 1: Integration by parts: let , and . . **Answer: . Why not the others:** " missing boundary" evaluates but forgets to subtract it from the boundary term ; " upper boundary" evaluates only the boundary product , ignoring the integrated term; " rounded integer" approximates and rounds upwards incorrectly.
Practise more Integral Calculus and Fundamental Theorem.
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