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

The critical f(x,y)=xy+2/x+4/y is (1,2)

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critical f(x,y)=xy+2/x+4/y

critical points

f (x, y) = x y + \frac{2}{x} + \frac{4}{y}

(1, 2)

Solution steps

x y + \frac{2}{x} + \frac{4}{y}

Find where

\nabla f (x, y)

is equal to zero or undefined

(1, 2)

x^{2} e^{- x^{2}}

2 x^{2} + x y^{2} - 6 x y + 5 x + 2

x^{2} + 4 x + 3

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

R (w) = \frac{w ^{2} + 1}{w ^{2} - w - 6}

What is the critical f(x,y)=xy+2/x+4/y ?
The critical f(x,y)=xy+2/x+4/y is (1,2)