im having trouble finding c.ps $\displaystyle f(x,y)=(x^2 - 3xy + y^2)e^-(x^2 + y^2) $ so far i have (0,0) after adding and subtracting the partial derivatives are there any other?
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Originally Posted by statman101 im having trouble finding c.ps $\displaystyle f(x,y)=(x^2 - 3xy + y^2)e^-(x^2 + y^2) $ so far i have (0,0) after adding and subtracting the partial derivatives are there any other? Put { } around anything you want as exponent: $\displaystyle f(x,y)= (x^2- 3xy+ y^2)e^{-(x^2+ y^2)}$. I'm not at all clear why you would "add and subtract partial derivatives". What did you get for the partial derivatives?
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