State the derivative of $\tan {{x}^{2}}$. Hence, or otherwise, find \(\displaystyle\displaystyle \

Question

State the derivative of $\tan {{x}^{2}}$. Hence, or otherwise, find $\displaystyle\displaystyle \displaystyle\int{{{x}^{3}}{{\sec }^{2}}{{x}^{2}}\mathrm{d}x}$[4]

Accepted Answer

$2x{{\sec }^{2}}{{x}^{2}}$; $\frac{1}{2}\left( {{x}^{2}}	an {{x}^{2}}-\ln \left| \sec {{x}^{2}} ight| ight)+c$

2020 EJC P1 Q2

2020 EJC P1 Q2

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