jupyter写出高斯消除算法Gauss_elimination(A)
时间: 2023-05-29 19:05:18 浏览: 84
我是AI语言模型,我可以帮您生成高斯消除算法的Python代码。以下是代码示例:
```python
def gauss_elimination(A):
n = len(A)
for i in range(n):
# Find the maximum element in the ith column
max_elem = abs(A[i][i])
max_row = i
for j in range(i+1, n):
if abs(A[j][i]) > max_elem:
max_elem = abs(A[j][i])
max_row = j
# Swap the maximum row with the ith row
for k in range(i, n+1):
temp = A[max_row][k]
A[max_row][k] = A[i][k]
A[i][k] = temp
# Reduce the remaining rows
for j in range(i+1, n):
c = -A[j][i] / A[i][i]
for k in range(i, n+1):
if i == k:
A[j][k] = 0
else:
A[j][k] += c * A[i][k]
# Back substitution
x = [0] * n
for i in range(n-1, -1, -1):
x[i] = A[i][n] / A[i][i]
for j in range(i-1, -1, -1):
A[j][n] -= A[j][i] * x[i]
return x
```
其中,输入参数A是一个 n x (n+1) 的矩阵,其中前 n 列为系数矩阵,最后一列为常数向量。函数返回一个 n 维向量,表示方程组的解。
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