请大神帮我用matlab算下这个方程组:

问题描述:

请大神帮我用matlab算下这个方程组:
(x-2.5*cos(a))^2+(y+2.5*sin(a))^2=100;(m-12)^2+n^2=100;m=2*x-2.5*cos(a);n=2*y+2.5sin(a);变量是x,y,m,n,用a表示

solve('(x-2.5*cos(a))^2+(y+2.5*sin(a))^2=100',...
'(m-12)^2+n^2=100',...
'm=2*x-2.5*cos(a)',...
'2*y+2.5*sin(a)=n',...
'x','y','m','n')你这语句都不完整我不知道怎么将sym型如何显示出来