How do you differentiate # f(x) =x^2tan^-1 x #? Calculus Differentiating Trigonometric Functions Derivative Rules for y=cos(x) and y=tan(x) 1 Answer seol Nov 14, 2016 #f'(x)=(x^2\tan^-1(x))'=\color(olive)(x^2/(1+x^2)+2tan^-1(x))# Explanation: Apply Product Rule: #f'(x)=x^2(\tan^-1(x))'+(x^2)'tan^-1(x)# #=x^2(1/[1+x^2])+2\color(red)(x)(tan^-1(x))# #=\color(seagreen)(x^2/(1+x^2)+2xtan^-1(x))# Answer link Related questions What is the derivative of #y=cos(x)# ? What is the derivative of #y=tan(x)# ? How do you find the 108th derivative of #y=cos(x)# ? How do you find the derivative of #y=cos(x)# from first principle? How do you find the derivative of #y=cos(x^2)# ? How do you find the derivative of #y=e^x cos(x)# ? How do you find the derivative of #y=x^cos(x)#? How do you find the second derivative of #y=cos(x^2)# ? How do you find the 50th derivative of #y=cos(x)# ? How do you find the derivative of #y=cos(x^2)# ? See all questions in Derivative Rules for y=cos(x) and y=tan(x) Impact of this question 2194 views around the world You can reuse this answer Creative Commons License