📚 Find the derivative of tangent functions

What you'll need:

Derivative of the tangent: (d/dx tan⁡u=sec^2⁡u∙du/dx )

Q. Find the derivative of the following:

(a) y=3 tan⁡〖x^2 〗

(b) y=2 sin⁡3x tan⁡3x

Recall:
Derivative of a product of two factors: (d(uv)/dx=u dv/dx+v du/dx)