What is the extreme f(x,y)=2x^3y-sqrt(-xy) ?

The extreme f(x,y)=2x^3y-sqrt(-xy) is None

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extreme f(x,y)=2x^3y-sqrt(-xy)

extreme points

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

None

Solution steps

Find the critical points:

None

2 x^{3} y - - x y

has no critical points, therefore there are no extreme points

None

f (x) = x^{2} - 4 x + 9

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

1 - e^{- 0.5 x}

f (x, y) = 2 x y + \frac{1}{x} + \frac{4}{y}

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

What is the extreme f(x,y)=2x^3y-sqrt(-xy) ?
The extreme f(x,y)=2x^3y-sqrt(-xy) is None