Python Numpy matrix.I()
在numpy.matrix.I()函数的帮助下,我们可以得到与我们给定矩阵相同大小的乘法逆。
语法: numpy.matrix.I()
返回 : [矩阵对象] 如果自已是非星形的,ret是这样的:ret *自已 ==自已 * ret == np.matrix(np.eye(self[0,:].size) 全部返回 True。返回给定矩阵的乘法逆运算。
代码#1:
# Python program explaining
# numpy.matrix.I() function
# importing numpy as geek
import numpy as geek
mat = geek.matrix('[3, 4; 5, 6]')
# applying matrix.getI() method
gfg = mat.getI()
print(gfg)
输出 :
[[-3. 2. ]
[ 2.5 -1.5]]
代码#2:
# Python program explaining
# numpy.matrix.I() function
# importing numpy as geek
import numpy as geek
mat = geek.matrix('[1, 2, 3; 4, 5, 6; 7, 8, 9]')
# applying matrix.getI() method
gfg = mat.getI()
print(gfg)
输出 :
[[ -4.50359963e+15 9.00719925e+15 -4.50359963e+15]
[ 9.00719925e+15 -1.80143985e+16 9.00719925e+15]
[ -4.50359963e+15 9.00719925e+15 -4.50359963e+15]]