What is the extreme f(x,y)=6xy ?

The extreme f(x,y)=6xy is Saddle(0,0)

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extreme f(x,y)=6xy

extreme points

f (x, y) = 6 x y

Saddle (0, 0)

Solution steps

Find the critical points:

(0, 0)

\frac{\partial ^{2} f}{\partial x ^{2}} = 0

D (x, y) = - 36

Check the sign of at each critical point

Check critical point

(0, 0) :

Saddle

Saddle (0, 0)

f (x) = x x^{2} + 25, - 6 \leq x \leq 4

(- 2.3) (1)

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

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

a y = (x - 9) e^{x}