Question: For Exercises 7-16, find the critical points and classify themas local maxima, local minima, saddle points, or none of these.f(x,y)=x2-2xy+3y2-8yf(x,y)=400-3x2-4x+2xy-5y2+48yf(x,y)=x3+y2-3x2+10y+6f(x,y)=x3-3x+y3-3yf(x,y)=x3+y3-3x2-3y+10f(x,y)=x3+y3-6y2-3x+9f(x,y)=(x+y)(xy+1)f(x,y)=8xy-14(x+y)4f(x,y)=5+6x-x2+xy-y2f(x,y)=e2x2+y2

For Exercises 7-16, find the critical points and classify themas local maxima, local minima, saddle points, or none of these.f(x,y)=x2-2xy+3y2-8yf(x,y)=400-3x2-4x+2xy-5y2+48yf(x,y)=x3+y2-3x2+10y+6f(x,y)=x3-3x+y3-3yf(x,y)=x3+y3-3x2-3y+10f(x,y)=x3+y3-6y2-3x+9f(x,y)=(x+y)(xy+1)f(x,y)=8xy-14(x+y)4f(x,y)=5+6x-x2+xy-y2f(x,y)=e2x2+y2

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