To Find: Differentiation

NOTE : When 2 functions are in the product then we used product rule i.e

Formula used: (tan nu) = sec² (nu).(nu).

Let us take y = tan3x

So, by using the above formula, we have

tan3x = sec²(3x) (3x) = 3sec²(3x)

Differentiation of y = tan3x is 3sec²(3x)