What is the extreme f(x)=-x^2-y^2-2y+5 ?

The extreme f(x)=-x^2-y^2-2y+5 is Maximum(0,-1)

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extreme f(x)=-x^2-y^2-2y+5

extreme points

f (x) = - x^{2} - y^{2} - 2 y + 5

Maximum (0, - 1)

Solution steps

Find the critical points:

(0, - 1)

\frac{\partial ^{2} f}{\partial x ^{2}} = - 2

D (x, y) = 4

Check the sign of at each critical point

Check critical point

(0, - 1) :

Maximum

Maximum (0, - 1)

What is the extreme f(x)=-x^2-y^2-2y+5 ?
The extreme f(x)=-x^2-y^2-2y+5 is Maximum(0,-1)