JAMB Mathematics 2007 Objective — Question 40

Question 40 of 50 from the Joint Admissions and Matriculation Board (JAMB) Mathematics 2007 Objective paper, with the correct answer and a full explanation.

Determine the value of the integral of -2cos(x) dx from 0 to pi/2.

A. -3
B. -2Correct
C. -3/2
D. -1/2

Explanation

Integral of -2cos(x) dx = -2sin(x). Evaluating from 0 to pi/2: -2sin(90) - (-2sin(0)) = -2 - 0 = -2.

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