MCQ
If $y=\left(\sin x^2\right)^2$, then '("d" $\left.y\right) /\left({ }^{\prime} d^{\prime \prime} x\right)^{\prime}$ is equal to ______.
- A$4 x \sin 2 x^2$
- B$-x \cos x^2$
- ✓$2 x \sin 2 x^2$
- D$-x \sin 2 x^2$
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$\begin{array}{cc}
\phantom{..........}\ce{Br}\phantom{...........}\ce{CH3}\\
\phantom{.......}|\phantom{.............}|\\
\ce{CH3 - CH - CH - CH2 - C - CH3}\\
|\phantom{...................}|\\
\phantom{...}\ce{C2H5}\phantom{...............}\ce{C2H5}\end{array}$