2022年10月18日 · 在MATLAB中提供了sym和sym s函数 用来定义符号，这两种定义符号变量的方式是不同的。 下面对其逐一介绍。 首先是sym函数，sym函数用来定义一个变量最简单的方式如下所示： 此时变量a所表示的就是字符a，下面举一个简单的示例： 结果如下所示： sin(x) tan(x) 3*x^2 + 4^x + 2. log(x) exp(x) 通过上面的运行结果可以看出y、z、w、p和q是与字符变量x相关的符号变量。 sym函数的符号变量不仅可以赋值为符号，同样也可以赋值为数字，例如： 运算 …

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2011年1月31日 · Hi, I trying to make a simple program, I would like to know how to make this syms x; fun=x^2; x0=2; x=x0; fun And what a expect in the last line is 4 but I get X^2 How can I convert th...

sym(___,set) creates a symbolic variable or array and sets the assumption that the variable or all array elements belong to set. Here, set can be "real", "positive", "integer", or "rational". You also can combine multiple assumptions by specifying a string array or cell array of character vectors.

2019年9月17日 · 本文详细介绍了MATLAB中符号数学的使用方法，包括如何定义符号变量和函数，以及进行表达式运算。 阐述了符号变量与常量的区别，以及定义符号有值常量的方法。 适合初学者了解MATLAB符号数学的基本操作。 注意：sym中传入参数加单引号. ④： ⑤： 文章浏览阅读3.3k次，点赞3次，收藏18次。 本文详细介绍了MATLAB中符号数学的使用方法，包括如何定义符号变量和函数，以及进行表达式运算。 阐述了符号变量与常量的区别，以及定义符号有值 …

syms lists the names of all symbolic scalar variables, functions, matrix variables, matrix functions, and arrays in the MATLAB workspace. S = syms returns a cell array of the names of all symbolic scalar variables, functions, matrix variables, matrix functions, and arrays. Create symbolic scalar variables x and y.

2021年10月16日 · I want to use GNU Octave to solve my equations. Equations contain syms variables and vectors with decimal numbers in them. How properly solve these equations without getting warnings that im doing dangerous operation and wierd approximations for precious decimal numbers. here is the code: here is the output:

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