Confirm the location of the three critical points illustrated in Figure 12.3 and use the second partial

Question:

Confirm the location of the three critical points illustrated in Figure 12.3 and use the second partial derivative test to classify them. f (x1x2) @ 20 -20 -2 I1 0 2 4-4 0 x2 f(x1x2) (b) 20 -2 0 2 4-4 2 x2 4 f(x1x) 20 -20 -2 x1 0 2 4-4 -2 0 2 f(x1x2) 20 -20 x1 0 2 4-4 2 Figure 12.3 Local maxima, minima, and saddle