exm050232_1.m

好多m文件

syms a x;f=a*sin(x)+5;  

f1=subs(f,'sin(x)',sym('y'))															%<2>  

f2=subs(f,{a,x},{2,sym(pi/3)})														%<3>  

f3=subs(f,{a,x},{2,pi/3})																%<4>  

f4=subs(subs(f,a,2),x,0:pi/6:pi)													%<5>  

f5=subs(f,{a,x},{0:6,0:pi/6:pi})													%<6>