Ok... I have gotten this far with this problem:
To get [x'*y+x+y'] I used the product rule
To get [3y^2] I used the product rule
to get "0" I used the constant rule
so... what's next ?
I know I am solving for y'
but can't figure out the next step
How to get y' alone one side or should it be taken away at this point ?
VERY VERY confused