matrix 実行例
help出力 matrix.py --help
A: [[2 5] [1 3]] B: [[-1] [ 1]] S: [[ 2. -1.] [-1. 5.]] V1: [1 1 2] V2: [2 1 3] Inner product np.inner V1 dot V2 = 9 np.dot V1 dot V2 = 9 Outer product (DO NOT use np.outer() np.cross V1 x V2: [ 1 1 -1] np.inv A^-1: [[ 3. -5.] [-1. 2.]] A*A.i: [[1. 0.] [0. 1.]] determinant for A = -2.0 nympy.linalg.eig(A): Eigen values: [0.20871215 4.79128785] Eigen vectors: [[-0.94140906 -0.87315384] [ 0.33726692 -0.48744474]] Solve simultaneous linear equations AX = B: [[-8.] [ 3.]] LU decomposition A = PLU: A: [[2 5] [1 3]] P: [[1. 0.] [0. 1.]] L: [[1. 0. ] [0.5 1. ]] U: [[2. 5. ] [0. 0.5]] P@L@U: [[2. 5.] [1. 3.]] Cholesky decompositioin S = LL^T: S: [[ 2. -1.] [-1. 5.]] L: [[ 1.41421356 0. ] [-0.70710678 2.12132034]] L*L^T: [[ 2. -1.] [-1. 5.]] QR decomposition: A: [[2 5] [1 3]] Q: [[-0.89442719 -0.4472136 ] [-0.4472136 0.89442719]] R: [[-2.23606798 -5.81377674] [ 0. 0.4472136 ]] Q@R: [[2. 5.] [1. 3.]] D:\git\sphinx\tkProg\source\cms\matrix.py:3: UserWarning: A NumPy version >=1.23.5 and <2.3.0 is required for this version of SciPy (detected version 2.4.4) import scipy as sp
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