Evaluate .
Answer and explanation
Correct answer: D.
- Step 1: Use .
- Step 2: .
- Step 3: From 0 to : .
Answer
1 - pi/4.
Why not the others: is negative, but gives a positive area; adds instead of subtracts; mis-evaluates .
Practise more Calculus: Anti-differentiation and Areas Under Curves.
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