What is the critical f(x)=7y^2+14x^2-14x-7y+7xy-210 ?

The critical f(x)=7y^2+14x^2-14x-7y+7xy-210 is (3/7 , 2/7)

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critical f(x)=7y^2+14x^2-14x-7y+7xy-210

critical points

f (x) = 7 y^{2} + 14 x^{2} - 14 x - 7 y + 7 x y - 210

(\frac{3}{7}, \frac{2}{7})

Solution steps

7 y^{2} + 14 x^{2} - 14 x - 7 y + 7 x y - 210

Find where

\nabla f (x, y)

is equal to zero or undefined

(\frac{3}{7}, \frac{2}{7})

f (x) = x^{2} - 26 x + 2

f (x) = x^{3} + x^{2} - x - 1

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

f (x) = \frac{1}{3} x^{3} - 9 x + 24

f (x, y) = \frac{2 x ^{2} y}{3 x + 2 y}

What is the critical f(x)=7y^2+14x^2-14x-7y+7xy-210 ?
The critical f(x)=7y^2+14x^2-14x-7y+7xy-210 is (3/7 , 2/7)