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Differentiation - Jamb Mathematics Past Questions and Answers

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Jamb Mathematics Past Questions

Question 46:


Find the derivative of \(y=\frac{x^7 - x^5}{x^4}\)

A. X(x2-1)
B. 3x(x2-1)
C. 3x2-1
D. 7x6-5x4


Question 47:


Differentiate sin x - x cos x

A. X cos x
B. X sin x
C. -x cos x
D. -x sin x


Question 48:


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

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


Question 49:


If y = (2x + 1)3 find dy/dx

A. 3(2x+1)2
B. 6(2x+1)
C. 3(2x+1)
D. 6(2x+1)2


Question 50:


If y = x sinx, find \(\frac{dy}{dx}\)

A. Sin x - x cosx
B. Sinx + x cosx
C. Sinx - cosx
D. Sinx + cosx






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