What is the critical f(x,y)=x^3+2xy-2x-4y ?

The critical f(x,y)=x^3+2xy-2x-4y is (2,-5)

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critical f(x,y)=x^3+2xy-2x-4y

critical points

f (x, y) = x^{3} + 2 x y - 2 x - 4 y

(2, - 5)

Solution steps

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

Find where

\nabla f (x, y)

is equal to zero or undefined

(2, - 5)

f (x, y) = 2 x^{4} + y^{2} - 3 y x^{2}

f (x) = 5 x^{\frac{2}{3}} - 2 x^{\frac{5}{3}}

f (x) = x + \frac{32}{x ^{2}}

S (A, B) = 3 A^{4} B^{3} - 12 B^{3} + 7 A^{2}

f (x) = x - 2 + 4 - x

What is the critical f(x,y)=x^3+2xy-2x-4y ?
The critical f(x,y)=x^3+2xy-2x-4y is (2,-5)