Math Problem Solver

Let f(x,y)=(x−2)(x−4)y(y−2)

. Choose the incorrect option.

a.

(4,0)

is a saddle point of f

.

b.

(4,2)

is a saddle point of f

.

c.

(2,0)

is a saddle point of f

.

d.

(3,1)

is a saddle point of f

.