(-1,0) is a critical point for f (x,y) =x-3x+3xy2. Determine whether (-1,0) is a saddle point,...

 

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(-1,0) is a critical point for f (x,y) =x-3x+3xy2. Determine whether (-1,0) is a saddle point, local maximum, local minimum, or if there is not enough information to determine. (-1,0) is a critical point for f (x,y) =x-3x+3xy2. Determine whether (-1,0) is a saddle point, local maximum, local minimum, or if there is not enough information to determine.