differentiation

Question: $\frac{d}{{dx}}\left( {{x^3}{{\tan }^2}\frac{x}{2}} \right)$=

1) ${x^3}\tan \frac{x}{2}.{\sec ^2}\frac{x}{2} + 3x{\tan ^2}\frac{x}{2}$

2) ${x^3}\tan \frac{x}{2}.{\sec ^2}\frac{x}{2} + 3{x^2}{\tan ^2}\frac{x}{2}$

3) ${x^3}{\tan ^2}\frac{x}{2}.{\sec ^2}\frac{x}{2} + 3{x^2}{\tan ^2}\frac{x}{2}$

4) None of these

Solution:

Explanation: Explanation

standard-differentiation

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