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《MATLAB 7.0编程基础》第4章 （源码实例）主要讲解MATLAB的符号运算

syms x;	
f = 2*x^3+x^2+x;
g = 2*x^2+x+1;
% 创建符号表达式f和g
addfg = f+g
subfg = f-g
mulfg = f*g
divfg = f/g
divgf = f\g
% 分别进行加、减、乘、除运算

R1 = simple(mulfg)
R2 = simple(divfg)
R3 = simple(divgf)