Question 36

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Jambmaths question: 

If $y=3\cos 4x,\text{ }\frac{dy}{dx}$ equals

Jamb Maths Solution: 

$\frac{dy}{dx}=\frac{d}{dx}(3\cos 4x)=3\times (-4\sin 4x)=-12\sin 4x$

Jamb Maths Topic: 
Year of Exam: