Expand Symbolic Expression syms x p = (x - 2)*(x - 4); expand(p) ans = x^2 - 6*x + 8 Expand Trigonometric Expression Expand the trigonometric expression cos(x + y). Simplify the cos function input x + y to x or y by applying standard identities. syms x y expand(cos(x + ...
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...
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...
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 ans= x^2+4*x-12 >> symmul(f,g)...
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. ...
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 ...
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). ...
7、expression,n) 列出表达式中认定n个自由符号变量expression是符号表达式或符号表达式矩阵,x是首选自由符号变量,认定优先次序为x, y, w, z, v等解题结果是“用符号参数构成的表达式表述自由符号变量”。解题时自由符号变量可“人为指定”,也可“默认地自动认定”:与小写字母 x 的ASII码距离最小的变量。syms u ...
MATLAB_简介(5)_MATLAB_符号数学1 MATLAB符号数学 在前面,我们已介绍了MATLAB在数值运算的能力,接著我们再说明另一种不同的运算法「符号数学」(symbolicmathematic)。符号代数 一般我们做运算时多半是以数值做运算,例如一算式1+0.5=1.5就是以数值运算;符号运算即是能以分数做运算,而无须转换成数值再 运算...
Convert anonymous functions associated with MATLAB® handles to a symbolic expression and a symbolic matrix. h_expr = @(x)(sin(x) + cos(x)); sym_expr = sym(h_expr) sym_expr = h_matrix = @(x)(x*pascal(3)); sym_matrix = sym(h_matrix) sym_matrix = Set Assumptions While ...