方程组求解matlab代码
时间: 2023-09-26 19:10:39 浏览: 55
方程组求解的MATLAB代码可以使用linsolve函数或者使用反斜杠运算符。下面是两种不同方法的示例代码:
方法一(使用linsolve函数):
```MATLAB
clc; clear;
A = [10 -1 0; -1 10 -2; 0 -2 10];
b = [9; 7; 6];
ans1 = linsolve(A, b)
```
方法二(使用反斜杠运算符):
```MATLAB
clc; clear;
A = [10 -1 0; -1 10 -2; 0 -2 10];
b = [9; 7; 6];
ans2 = A \ b
```
另外,如果系数矩阵A是一个大型稀疏矩阵,也可以使用稀疏矩阵的形式进行计算。下面是使用稀疏矩阵进行方程组求解的MATLAB代码示例:
```MATLAB
clc; clear;
A = sparse([0 2 0 1 0; 4 -1 -1 0 0; 0 0 0 3 -6; -2 0 0 0 2; 0 0 4 2 0]);
B = sparse([8; -1; -18; 8; 20]);
x = A \ B;
E1 = norm(B - A * x);
```
请根据您的具体需求选择适合的方法进行方程组求解。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
- *1* *3* [基于MATLAB的稀疏矩阵与符号求解线性方程组(附完整代码)](https://blog.csdn.net/forest_LL/article/details/124263184)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v92^chatsearchT0_1"}}] [.reference_item style="max-width: 50%"]
- *2* [基于MATLAB的求解线性方程组(附完整代码和例题)](https://blog.csdn.net/forest_LL/article/details/124209950)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v92^chatsearchT0_1"}}] [.reference_item style="max-width: 50%"]
[ .reference_list ]