What is the critical f(x,y)=-1/(2x^2+11xy+5y^2+18) ?

The critical f(x,y)=-1/(2x^2+11xy+5y^2+18) is (0,0)

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critical f(x,y)=-1/(2x^2+11xy+5y^2+18)

critical points

f (x, y) = - \frac{1}{2 x ^{2} + 11 x y + 5 y ^{2} + 18}

(0, 0)

Solution steps

- \frac{1}{2 x ^{2} + 11 x y + 5 y ^{2} + 18}

Find where

\nabla f (x, y)

is equal to zero or undefined

(0, 0)

\frac{1 + x}{x}

x^{4} + 2 x^{3} + 2 x^{2} + 4 x

f (x) = 5 x^{4} - 10 x^{2} + 2

f (x) = \frac{x ^{2} - 1}{x ^{2} - 4}

f (x) = 2 x^{3} + 3 x^{2} - 12 x + 7

What is the critical f(x,y)=-1/(2x^2+11xy+5y^2+18) ?
The critical f(x,y)=-1/(2x^2+11xy+5y^2+18) is (0,0)