# Thread: Implicit Differentiation

1. ## Implicit Differentiation

problem 1 on Flickr - Photo Sharing!

Help? How do I do this one? The answer I get isn't an option.

Thank you very much

2. Hello,
Excause me, can you show your work?
Maybe your solution is correct. But the another answer is the same but in different form.

3. Basically I used the quotient rule

and got (1+y')(x-y)-(1-y')(x+y) / (x-y)^2

I simplified it to -2y+2y'x/(x-y)^2 = 2x +2yy'

then I kinda stopped because I noticed that my answer was not going to match the ones given.

Anyways thank you for responding.

4. Originally Posted by bananasinpajamas
Basically I used the quotient rule

and got (1+y')(x-y)-(1-y')(x+y) / (x-y)^2

I simplified it to -2y+2y'x/(x-y)^2 = 2x +2yy'

then I kinda stopped because I noticed that my answer was not going to match the ones given.

Anyways thank you for responding.
Well, now solve it for $y'$.

The question wants you to find $y'=\frac{dy}{dx}$.