Engineering Board Exam Reviewer · Integration by Parts · medium

Evaluate: x2 ≤ft(x ),dx

1. - x2 ≤ft(x ) + 2 x ≤ft(x ) - 2 ≤ft(x )+C
2. x2 ≤ft(x ) - 2 x ≤ft(x ) - 2 ≤ft(x )+C
3. - x2 ≤ft(x ) + x ≤ft(x ) + ≤ft(x )+C
4. - x2 ≤ft(x ) + 2 x ≤ft(x ) + 2 ≤ft(x )+C

Answer

D. - x2 ≤ft(x ) + 2 x ≤ft(x ) + 2 ≤ft(x )+C

Solution

Parts twice: x2 x,dx=-x2 x+2 x x,dx=-x2 x+2x x+2 x+C.

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