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

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

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extreme f(x,y)=sqrt(-ln(1/(x+y)))

extreme points

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

None

Solution steps

Find the critical points:

None

- ln (\frac{1}{x + y})

has no critical points, therefore there are no extreme points

None

4 x^{5} - 5 x^{4}

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

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

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

f (x) = x^{2} + 8 x + 17

What is the extreme f(x,y)=sqrt(-ln(1/(x+y))) ?
The extreme f(x,y)=sqrt(-ln(1/(x+y))) is None