ans=0>> >>help limit--- sym/limit 的帮助 ---limit Limitofan expression. limit(F,x,a) takes the limitofthe symbolic expression Fasx->a. limit(F,a) uses symvar(F)asthe independent variable. limit(F) uses a=0asthe limit point. limit(F,x,a,'right')orlimit(F,x,a,'left') sp...
--- sym/limit 的帮助 --- limit Limit of an expression. limit(F,x,a) takes the limit of the symbolic expression F as x -> a. limit(F,a) uses symvar(F) as the independent variable. limit(F) uses a = 0 as the limit point. limit(F,x,a,'right') or limit(F,x,a,'left')...
5.`result=expand(symbolic_expression)`:展开一个符号表达式,将其进行分配,返回结果为一个展开后的表达式。 ```MATLAB %展开表达式 f=(x+y)^2; expanded_expression=expand(f) ``` 输出结果: ``` expanded_expression= x^2+2*x*y+y^2 ``` 6.`result=diff(symbolic_expression,variable)`:对一个符号...
——matlab不仅具有数值运算功能，还开发了在matlab环境下实现符号计算的工具包SymbolicMathToolbox 符号运算的功能 •••••• 符号表达式、符号矩阵的创建符号线性代数因式分解、展开和简化符号代数方程求解符号微积分符号微分方程 2013年8月6日12时46 3 一、符号运算的基本操作 1.什么是符号运算•与...
f= ' 2*x^2+3*x-5 ' % define the symbolic expression >>f= 2*x^2+3*x-5 >> g= ' x^2-x+7 ' g= x^2-x+7 >> symadd(f,g) % find an expression for f+g ans= 3*x^2+2*x+2 >> symsub(f,g) % find an expression for f-g ...
1.4 Symbolic Functions Use symbolic functions that accept symbolic inputs, such as $f(x,y)$. >>symsf(x,y)>>ff(x,y)=f(x,y) Assign a mathematical expression tof. >>f(x,y)=x^2*yf(x,y)=x^2*y>>ff(x,y)=x^2*y Find the value offat(3,2). ...
Examples: factor(x^9-1) is (x-1)*(x^2+x+1)*(x^6+x^3+1) factor(sym(12345678901234567890)) is (2)*(3)^2*(5)*(101)*(3803)*(3607)*(27961)*(3541) 4.简化 EXPAND Symbolic expansion. EXPAND(S) writes each element of a symbolic expression S as a product of its factors. ...
18、 = 7202222xsinyx2222xsinyxy符号表达式的微分以四种形式利用函数diffdiff: f= a*x3+x2-b*x-c % define a symbolic expressionf=a*x3+x2-b*x-cdiff(f) % differentiate with respect to the default variable xans= 3*a*x2+2*x-bdiff(f,a ) % differentiate with respect to aans= x3diff...
The first sin formula in x and the sin formula in t both simplify to 1 and the overall second expression simplifies to 2. If it were true that expand() is the reverse of simplify then it follows that if you were to 테마복사 expand(sym(3)) then the result should be 테마...
EX: a=sym(sin(2)) a=sym(sin(2),r) 3.1.2 创建符号变量和表达式 (Creating Symbolic Variables and Expression) 1. 使用sym命令创建符号变量和表达式 sym(‘变量’,参数) %把变量定义为符号对象 2.使用syms命令创建符号变量和符号表达式 syms(‘arg1’, ‘arg2’, …,参数) syms arg1 arg2 …,参数 ...