at the point (-1,1). We need to find y' ... what do?

Here's what I did, please tell me where I went wrong.

3(x+y)^2 (1+y') = 3x^2 + 3y^2 y'

How do I proceed?

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- December 6th 2009, 10:37 AMArchduke01implicit diff. question
at the point (-1,1). We need to find y' ... what do?

Here's what I did, please tell me where I went wrong.

3(x+y)^2 (1+y') = 3x^2 + 3y^2 y'

How do I proceed? - December 6th 2009, 10:53 AMArturo_026

Keep solving and then you want to isolate the y' in one side and the x and y in the other. Then you'll solve for y'. - December 6th 2009, 11:03 AMArchduke01
- December 6th 2009, 11:18 AMArturo_026
Hold on, This is wrong. give me a bit more time to correct it

- December 6th 2009, 11:25 AMArchduke01
Look, buddy. How did you go from

to

???

EDIT: Nevermind, I'll wait until your edit. - December 6th 2009, 11:33 AMArturo_026

This should be correct.

I apologize for my mistake, if it serves as an excuse, I was solving it in my head because i couldn't find paper. - December 6th 2009, 11:40 AMArchduke01
The problem I was having is that I didn't expand ASAP. Your step by step solution helped me see my mistakes. Thanks for the help, bromosapien. And no worries about the error.