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If f(x,y)=(5∗x3+4∗y3+4∗x∗y+1) find the critical point for f(x,y) x=____ y=____ Is this critical point a local...

If f(x,y)=(5∗x3+4∗y3+4∗x∗y+1) find the critical point for f(x,y)

x=____

y=____

Is this critical point a local maximum, local minimum, or saddle point?

Math   Calculus   
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