ermutuxia 发表于 2014-10-23 15:15 
syms x
a=solve(-87/2/x+1/2*exp(x)*(87+200*x)/x-782/5==0, x);
还是不行啊,显示:>> syms x
>> solve(-87/2/x+1/2*exp(x)*(87+200*x)/x-782/5==0, x)
??? Error using ==> char
Conversion to char from logical is not possible.
Error in ==> sym.solve at 46
S{k} = char(varargin{k});