How do you find the derivative of #y=tanh(6+e^(6x))#? Calculus Basic Differentiation Rules Chain Rule 1 Answer Euan S. Jun 28, 2016 Simple application of the chain rule. Explanation: #d/(du)(tanh(u)) = sech^2(u)# #(dy)/(dx) = (dy)/(du)*(du)/(dx)# So #sech^2(6+e^(6x))*d/(dx)(6+e^(6x))# #(dy)/(dx) = 6*e^(6x)*sech^2(6+e^(6x))# 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 1489 views around the world You can reuse this answer Creative Commons License