What is the extreme f(x,y)=-1/(x-y) ?

The extreme f(x,y)=-1/(x-y) is None

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extreme f(x,y)=-1/(x-y)

extreme points

f (x, y) = - \frac{1}{x - y}

None

Solution steps

Find the critical points:

None

- \frac{1}{x - y}

has no critical points, therefore there are no extreme points

None

f (x) = x^{4} - 14 x^{2} - 24 x + 1

f (x, y) = x^{2} y + 2 x y^{2} - 8 x + 4

f (x) = x^{4} - 8 x^{2} + 5

f (x) = 4 x^{3} - 12 x^{2}

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