# Inverse trig derivative

1. Apr 4, 2006

### mmh37

DOES ANYONE SEE WHY MY LATEX FORMULAE ARE NOT BEING GENERATED?

I was wondering how one can differentiate the following:

$$arctan (x/y)$$

wrt y

is it just inner times outer derivative, i.e.

$$(-x) /((1 + x^2/y^2)*y^2)$$

in the definitions I found they just gave examples like

$$tan^(-1) y$$

thanks very much

Last edited: Apr 4, 2006
2. Apr 4, 2006

### TD

LaTeX is currently down but I was able to follow your problem through the code.

If x and y are independant variables then you differentiate wrt to y, just by using the chain rule.