ok,
the question is to find local minimum and maximum of the next fuction: g(x,y)=f(x,y)^2019
first i did the partial derivative:
this is what i did:
gd/dx: 2019(f(x,y))^2018 * d/xf(x,y)
gd/dy: 2019(f(x,y))^2018* d/yf(x,y)
ect.( i did gxx,gyy,gxy)
now i need to do gd/dx=0 and gd/dy=0 to fing the critical points and this is where i stuck
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