Thread: quick differentiating question

how would I partially differentiate 1-x/(x^2+y^2) with respect to y and -y/(x^2+y^2) with respect to x.

Hello,

Originally Posted by anon18

how would I partially differentiate 1-x/(x^2+y^2) with respect to y and -y/(x^2+y^2) with respect to x.

x is treated as a constant since you differentiate with respect to y.
So
by applying the chain rule (the derivative of with respect to y is )

Same goes for the other one...