method
matrix.getI()
Returns the (multiplicative) inverse of invertible self.
Parameters:NoneReturns:retmatrix objectIf self is non-singular, ret is such that ret*self == self*ret == np.matrix(np.eye(self[0,:].size)) all return True.
Raises:numpy.linalg.LinAlgError: Singular matrixIf self is singular.
Examples
>>> m=np.matrix('[1, 2; 3, 4]');mmatrix([[1, 2], [3, 4]])>>> m.getI()matrix([[-2. , 1. ], [ 1.5, -0.5]])>>> m.getI()*mmatrix([[ 1., 0.], # may vary [ 0., 1.]])