AM-2052

Product rule

A Math · Secondary 4 · Medium · Product rule

It is given that

y = 3x\sin x

. Find

\dfrac{dy}{dx}

in the form

a\sin x + b x\cos x

, where

a

and

b

are constants.

$3\sin x + 3x\cos x$
$3\cos x + 3x\sin x$
$3x\sin x + 3x\cos x$
$3\sin x + x\cos x$

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