Evaluate .
Answer and explanation
Correct answer: B.
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- Step 1: Use -substitution: let , then .
- Step 2: Convert limits:
- Step 3: Set up the integral: .
- Step 4: Integrate: .
Answer
.
Why not the others: '1/5' forgets the factor from ; '1/12' uses power 3 instead of 4; '1/3' forgets to divide by the power .
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