python求逆矩阵
时间: 2023-08-02 11:09:01 浏览: 139
要在Python中求解矩阵的逆,可以使用NumPy库中的linalg.inv函数。以下是一个示例代码:
```python
import numpy as np
if __name__ == '__main__':
a = np.array(\[\[3, 4\], \[5, 6\]\])
b = np.linalg.inv(a)
print(b)
```
这段代码将输出矩阵a的逆矩阵。\[1\]
另外,如果你想使用矩阵对象来求逆,可以使用NumPy库中的matrix对象的.I属性。以下是一个示例代码:
```python
import numpy as np
if __name__ == '__main__':
a = np.array(\[\[3, 4\], \[5, 6\]\])
A = np.matrix(a)
b = A.I
print(b)
```
这段代码将输出矩阵a的逆矩阵。\[2\]
如果你需要求解奇异矩阵的伪逆,可以使用NumPy库中的pinv函数。以下是一个示例代码:
```python
import numpy as np
if __name__ == '__main__':
A = np.zeros((4, 4))
A\[0, -1\] = 2
A\[-1, 0\] = -1
A = np.matrix(A)
b = np.linalg.pinv(A)
print(b)
```
这段代码将输出奇异矩阵A的伪逆矩阵。\[2\]
希望这些代码能帮助到你!
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