Question

Differentiate tan^3x with respect to x

Answer 1

\[3 \tan ^{2 }x \sec ^{2} x\]
if i am not wrong

Answer 2

From here...
\[\frac{d}{dx}(\tan^3(x))\]
power rule, then chain rule
\[ 3 \tan^2(x) (\frac{d}{dx}(\tan(x)))\]
derivative of tangent is sec^2
\[3 \tan^2(x) \sec^2(x)\ dx\]