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Trigonometric functions - Jamb Mathematics Past Questions and Answers

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Jamb Mathematics Past Questions

Jamb Past Questions and Answers on Trigonometric functions

Question 6:


If y = x sinx, find dy/dx when x = π/2.

A. -π/2
B. -1
C. 1
D. π/2

View Answer & Explanation

Question 7:


If y = 3 cos(x/3), find dy/dx when x = (3π/2)

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

View Answer & Explanation

Question 8:


If dy/dx = x + cos x, find y

A. X2 - sin x + c
B. X2 + sin x + c
C. X2/2 - sin x + c
D. X2/2 + sin x + c

View Answer & Explanation

Question 9:


Differentiate (cos θ - sin θ)\(^2\)

A. -2 cos 2θ
B. -2 sin2θ
C. 1 - 2 cos 2θ
D. 1 - 2 sin 2θ

View Answer & Explanation

Question 10:


If y = 3 cos 4x, dy/dx equals

A. 6 sin 8x
B. -24 sin 4x
C. 12 sin 4x
D. -12 sin 4x

View Answer & Explanation



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