Sympy - RxJS, ggplot2, Python Data Persistence, Caffe2 ...
嚜燙ymPy
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SymPy
About the Tutorial
SymPy is a Python library for symbolic mathematics. It aims to become a full-featured
computer algebra system (CAS) while keeping the code as simple as possible in order to
be comprehensible and easily extensible.
Audience
This tutorial is designed for python programmers who would like to get introduced to the
symbolic mathematics including basics of symbolic computing, basic symbolic operations,
calculus, matrices and some select advanced topics.
Prerequisites
Before proceeding with this tutorial, you should have a good understanding of python
programming language. This tutorial assumes a decent mathematical background. Most
examples require knowledge lower than a calculus level, and some require knowledge at
a calculus level.
Copyright & Disclaimer
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SymPy
Table of Contents
About the Tutorial ........................................................................................................................................... ii
Audience .......................................................................................................................................................... ii
Prerequisites .................................................................................................................................................... ii
Copyright & Disclaimer .................................................................................................................................... ii
Table of Contents ........................................................................................................................................... iii
1.
SymPy 求 Introduction .............................................................................................................................. 1
2.
SymPy 求 Installation ................................................................................................................................ 2
3.
SymPy 求 Symbolic Computation .............................................................................................................. 3
4.
SymPy 求 Numbers ................................................................................................................................... 5
5.
SymPy 求 Symbols ..................................................................................................................................... 9
6.
SymPy 求 Substitution............................................................................................................................. 11
7.
SymPy 求 sympify() function ................................................................................................................... 13
8.
SymPy 求 evalf() function ........................................................................................................................ 14
9.
SymPy - Lambdify() function ................................................................................................................... 15
10. SymPy 求 Logical Expressions .................................................................................................................. 16
BooleanTrue function .................................................................................................................................... 16
BooleanFalse function ................................................................................................................................... 16
And function .................................................................................................................................................. 16
Or function .................................................................................................................................................... 17
Not Function .................................................................................................................................................. 17
Xor Function .................................................................................................................................................. 18
Nand Function ............................................................................................................................................... 18
Nor Function .................................................................................................................................................. 19
Equivalent function ....................................................................................................................................... 19
ITE function.................................................................................................................................................... 19
11. SymPy 求 Querying ................................................................................................................................. 20
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SymPy
12. SymPy 求 Simplification .......................................................................................................................... 22
simplify .......................................................................................................................................................... 22
expand ........................................................................................................................................................... 22
factor ............................................................................................................................................................. 23
collect ............................................................................................................................................................ 23
cancel............................................................................................................................................................. 24
trigsimp .......................................................................................................................................................... 24
powersimp ..................................................................................................................................................... 25
combsimp ...................................................................................................................................................... 25
logcombine .................................................................................................................................................... 26
13. SymPy 求 Derivative ................................................................................................................................ 27
14. SymPy 求 Integration .............................................................................................................................. 29
Integral Transforms ....................................................................................................................................... 30
15. SymPy 求 Matrices .................................................................................................................................. 32
Basic manipulation ........................................................................................................................................ 32
Arithmetic Operations ................................................................................................................................... 34
Matrix Constructors ....................................................................................................................................... 36
16. SymPy 求 Function class .......................................................................................................................... 38
Functions for complex number ..................................................................................................................... 38
Trigonometric functions ................................................................................................................................ 40
Functions on Integer Number ....................................................................................................................... 40
Combinatorial functions ................................................................................................................................ 41
binomial ......................................................................................................................................................... 41
Miscellaneous Functions ............................................................................................................................... 43
17. SymPy 求 Quaternion .............................................................................................................................. 44
add() .............................................................................................................................................................. 44
mul() .............................................................................................................................................................. 45
inverse() ......................................................................................................................................................... 45
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SymPy
pow() ............................................................................................................................................................. 45
exp() ............................................................................................................................................................... 46
18. SymPy 求 Solvers .................................................................................................................................... 47
Linear equation.............................................................................................................................................. 48
Non-linear equation ...................................................................................................................................... 48
differential equation...................................................................................................................................... 48
19. SymPy 求 Plotting ................................................................................................................................... 50
20. SymPy 求 Entities .................................................................................................................................... 57
Point .............................................................................................................................................................. 57
Line ................................................................................................................................................................ 57
Triangle .......................................................................................................................................................... 58
Ellipse............................................................................................................................................................. 58
21. SymPy 求 Sets ......................................................................................................................................... 60
22. SymPy 〞 Printing ................................................................................................................................... 62
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