passpadi

2012

Mathematics

JAMB

Evaluate ∫2 1 (x2 −4x)dx

A.

11/3

B.

3/11

C.

-3/11

D.

-11/3

Correct Answer: -11/3

Explanation

2 1 (x2 −4x)dx (x3/3 − 4x2/2) substituting integrate values [8/3 − 4 × 4/2] − [1/2 − 2] = −11/3

2 1 (x2 −4x)dx (x3/3 − 4x2/2) substituting integrate values [8/3 − 4 × 4/2] − [1/2 − 2] = −11/3
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