matlab。二分法求根
时间: 2024-02-28 07:50:04 浏览: 239
matlab二分法求根
以下是使用Matlab的二分法求根的示例代码:
```matlab
clearvars; clc;
% 定义函数
function y = hanshu(x)
y = x.^6 - 2*x.^4 - 6*x.^3 - 13*x.^2 + 8*x + 12;
end
% 设置初始区间和误差限
a = -2.5;
b = -1.5;
eps = 0.000001;
% 初始化中点和函数值
c = (a + b) / 2;
fc = hanshu(c);
% 迭代直到满足精度要求
while abs(fc) > eps
fa = hanshu(a);
fb = hanshu(b);
% 判断根的位置并更新区间
if fa * fc > 0
a = c;
else
b = c;
end
% 更新中点和函数值
c = (a + b) / 2;
fc = hanshu(c);
end
% 输出结果
x = c;
disp(x);
```
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