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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

f = sym('cos(x)+(-sin(x)^2)^(1/2)');
g = sym('cos(x)^2+sin(x)^2');
	% 创建符号表达式f和g
R = simplify(g)
R1 = simplify(f)
R2 = simplify(R1)
% 应用simplify函数对表达式多次化简
R3 = simple(g)
R4 = simple(f)
R5 = simple(R4)	
% 应用simple函数对表达式多次化简