What is the derivative of #f(x) = 8 π 9 #? Calculus Basic Differentiation Rules Chain Rule 1 Answer Alan N. Aug 22, 2016 #f'(x)=0# Explanation: #8pi9 = 72pi# which is a constant By definition, the derivative of a constant #= 0# Hence, #f'(x) =0# Answer link Related questions What is the Chain Rule for derivatives? How do you find the derivative of #y= 6cos(x^2)# ? How do you find the derivative of #y=6 cos(x^3+3)# ? How do you find the derivative of #y=e^(x^2)# ? How do you find the derivative of #y=ln(sin(x))# ? How do you find the derivative of #y=ln(e^x+3)# ? How do you find the derivative of #y=tan(5x)# ? How do you find the derivative of #y= (4x-x^2)^10# ? How do you find the derivative of #y= (x^2+3x+5)^(1/4)# ? How do you find the derivative of #y= ((1+x)/(1-x))^3# ? See all questions in Chain Rule Impact of this question 1410 views around the world You can reuse this answer Creative Commons License