R D Sharma Solutions for Chapter: Derivatives, Exercise 1: EXERCISE 30.1

Find the derivative of $f\left(x\right)=3x$ at $x=2$.

Find the derivative of $f\left(x\right)=x$ at $x=1$.

Find the derivative of $f\left(x\right)=\cos x$ at $x=0$

Find the derivative of $f\left(x\right)=\tan x$ at $x=0$.

Find the derivative of the function $\sin x$ at the point $x=\frac{\pi }{2}$.

Find the derivative of the function $x$ at the point $x=1$.

Find the derivative of the function $2\cos x$ at the point $x=\frac{\pi }{2}$.

Find the derivative of the function $\sin 2x$ at the point $x=\frac{\pi }{2}$.