APFIVE Derivative of a Product at a Point
If $$y = 3x \sin x$$, then at $$x = \displaystyle\frac{\pi}{2}$$, $$\displaystyle\frac{dy}{dx} =$$
A
$$3$$
B
$$0$$
C
$$\displaystyle\frac{3\pi}{2}$$
D
$$6$$
If $$y = 3x \sin x$$, then at $$x = \displaystyle\frac{\pi}{2}$$, $$\displaystyle\frac{dy}{dx} =$$
$$3$$
$$0$$
$$\displaystyle\frac{3\pi}{2}$$
$$6$$