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OpenStudy (usukidoll):
Can anyone help me find the critical points to this equation f(x,y) = x^2+xy+y^2+3x-3y+4 extreme values and saddle points
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OpenStudy (usukidoll):
I need help finding the critical points... I understand the rest though. I have to find fxx, fxy, fxy, and fyy. I know that, but what about finding the critical points?
OpenStudy (anonymous):
First find derivative of expression.
OpenStudy (usukidoll):
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OpenStudy (usukidoll):
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