What is the extreme f(x,y)=x+3y ?

The extreme f(x,y)=x+3y is None

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extreme f(x,y)=x+3y

extreme points

f (x, y) = x + 3 y

None

Solution steps

Find the critical points:

None

x + 3 y

has no critical points, therefore there are no extreme points

None

f (x) = 7 - x^{4} + 2 x^{2} - y^{2}

x^{3} - 9 x^{2}

f (x) = \frac{1}{3} x^{3} + x^{2} - 48 x + 20

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

f (x) = e^{x^{3} - 12 x + 5}