Dy/dx

[JeffGlasgow]

If ln(x+y)=tan^-1(y) then find dy/dx


Any clues?

 

[stapel]

If ln(x+y)=tan^-1(y) then find dy/dx

You've posted this to "Differential Equations", which means that you've completed calculus. Where are you stuck on this implicit differentiation?

Please be complete. Thank you!

 

[HallsofIvy]

If ln(x+y)=tan^-1(y) then find dy/dx


Any clues?

This is not a differential equation, it is just asking you to find the derivative of a function. Have you not taken Calculus? You should have learned that the derivative of ln(x) is 1/x and the derivative of tan^-1(x) is 1/(1+ x^2). Those and the chain rule are all you need.