symbolic-math

问题 Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 4 years ago . There are quite a few algebra solvers and simplifiers on the web (for example, the decent one at algebra.com). However, I'm looking for something I can plug into C# as part of a larger project (I'm making my own calculator, but obviously I'd ask permission etc.). Ideally, I'd use code

问题 Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 4 years ago . There are quite a few algebra solvers and simplifiers on the web (for example, the decent one at algebra.com). However, I'm looking for something I can plug into C# as part of a larger project (I'm making my own calculator, but obviously I'd ask permission etc.). Ideally, I'd use code

问题 Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 4 years ago . There are quite a few algebra solvers and simplifiers on the web (for example, the decent one at algebra.com). However, I'm looking for something I can plug into C# as part of a larger project (I'm making my own calculator, but obviously I'd ask permission etc.). Ideally, I'd use code

问题 I am generating symbolic functions and using SymPy to simplify them. Now I would like a way to "simplify" symbols that represent constant parameters in a function that is yet to be fitted. For example, if I am generating a polynomial, I might generate a string like this C*x*x + C*x + C*x + C, which SymPy would turn into C*x^2 + 2*C*x + C. Now I would like to find a way to get this: C*x^2 + C*x + C. In other words, is there a way to tell SymPy that a certain symbol is constant and undefined,

问题 I have a multivariate polynomial (which in the general case many many variables) whose coefficients list some data that I need to read off, but it doesn't seem like sympy gives a good way to do this. The collect function seemed like the right idea, but when you use it with several variables, it doesn't actually give you the individual monomials, but rather strange groupings of monomials that depend on the order you listed the variables. Does anyone know of a way to do this? 回答1: The

问题 I want to find cos(5) . Why is this expression invalid: syms x f=sin(x) disp(diff(f)(5)) The error is Line: 3 Column: 12 Indexing with parentheses '()' must appear as the last operation of a valid indexing expression. 回答1: Your error has nothing to do with symbolic variables. It is caused by the statement diff(f)(5) - which is not something MATLAB syntax allows (as of R2019b). MATLAB interprets this as the user trying to access the 5th element of some intermediate result. If you want to know

问题 Closed . This question is opinion-based. It is not currently accepting answers. Want to improve this question? Update the question so it can be answered with facts and citations by editing this post. Closed 6 years ago . I am extreamly interested in math and programming and planning to start symbolic math project from scratch . Is this good project idea? Where to start? How should one approach this project? Any good resources? Thanks in advance. 回答1: It's a good project to practice

问题 Closed . This question is opinion-based. It is not currently accepting answers. Want to improve this question? Update the question so it can be answered with facts and citations by editing this post. Closed 6 years ago . I am extreamly interested in math and programming and planning to start symbolic math project from scratch . Is this good project idea? Where to start? How should one approach this project? Any good resources? Thanks in advance. 回答1: It's a good project to practice

问题 I'm trying to learn the ins and outs of symbolic manipulation in python (I'm a beginner). I have the following basic code, and the output is giving me an error telling me that it "can't convert expression to float". What's wrong with this code: from sympy import * from math import * def h(x): return log(0.75392 * x) x = symbols('x') hprime = h(x).diff(x) print(hprime) 回答1: This is a classic example of what is said in PEP-8 about wildcard imports: Wildcard imports ( from <module> import * )

问题 I'm trying to learn the ins and outs of symbolic manipulation in python (I'm a beginner). I have the following basic code, and the output is giving me an error telling me that it "can't convert expression to float". What's wrong with this code: from sympy import * from math import * def h(x): return log(0.75392 * x) x = symbols('x') hprime = h(x).diff(x) print(hprime) 回答1: This is a classic example of what is said in PEP-8 about wildcard imports: Wildcard imports ( from <module> import * )