6.9 条件付極値

1.

(a) $${f(1,0) = f(-1,0) = 1 \ {\rm 最小値}, f(0,1) = f(0,-1) = 3 \ {\rm 最大値}}$$

=2.6zw =1(b) $${f(2,0) = 0 \ {\rm 最小値}, f(-2,0) = 8 \ {\rm 最大値}}$$

(c) $${f(0,-1) = -1 \ {\rm 最小値}, f(\frac{1}{\sqrt{2}},\frac{1}{\sqrt{2}}) = \frac{1}{2} + \sqrt{2} \ {\rm 最大値}}$$

2.

$${\frac{1}{4}}$$