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二元函数绘图并求极值。
表达式里 a 是 x，b 是 y 吗？如果是的话，a 不能小于 1，否则 a.^2-1 为负数，外面的sqrt就会得到复数 所以你的 x 的范围似乎应该是1到10 g=@(a,b) 0.2*sqrt(2*pi*b./(a.^2-1)).*log(s...
3 years ago | 0
| accepted
