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

The extreme f(x,y)=x+y-xy is Saddle(1,1)

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

extreme f(x,y)=x+y-xy

extreme points

f (x, y) = x + y - x y

Saddle (1, 1)

Solution steps

Find the critical points:

(1, 1)

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

D (x, y) = - 1

Check the sign of at each critical point

Check critical point

(1, 1) :

Saddle

Saddle (1, 1)

\frac{- 3 x + 48}{( x - 120 ) ^{9}}

f (x, y) = x^{2} + x y + y^{2} + x + a y

e^{x}

f (x) = x^{2} + y^{2} + 5

\frac{24}{r} + 2 π r^{2}