mirror of
https://github.com/Visualize-ML/Book4_Power-of-Matrix.git
synced 2026-02-03 02:24:03 +08:00
21 lines
416 B
Python
21 lines
416 B
Python
|
|
###############
|
|
# Authored by Weisheng Jiang
|
|
# Book 4 | From Basic Arithmetic to Machine Learning
|
|
# Published and copyrighted by Tsinghua University Press
|
|
# Beijing, China, 2022
|
|
###############
|
|
|
|
# Bk4_Ch4_08.py
|
|
|
|
from numpy.linalg import matrix_power as pw
|
|
A = np.array([[1., 2.],
|
|
[3., 4.]])
|
|
|
|
# matrix inverse
|
|
A_3 = pw(A,3)
|
|
A_3_v3 = A@A@A
|
|
|
|
# piecewise power
|
|
A_3_piecewise = A**3
|