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Differentiation of trigonometric functions and differentiation rules — Question 52

Original QCE Vault practice · 1 mark

Q52 · Practice questionTechnology-freeSimple familiar1 mark

QUESTION 52

If y=sin⁡(2x)+cos⁡xy=\sin(2x)+\cos x, then dydx\dfrac{dy}{dx} is
(A)
2sin⁡(2x)−sin⁡x2\sin(2x)-\sin x
(B)
cos⁡(2x)−sin⁡x\cos(2x)-\sin x
(C)
2cos⁡(2x)+sin⁡x2\cos(2x)+\sin x
(D)
2cos⁡(2x)−sin⁡x2\cos(2x)-\sin x
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