Thanks ! i've done it.

use command : maple('interface','labeling=false')

thansk, but i run this command :

>syms x y

> f=cos(y) sin(x) + cos(x) sin(y)
 
f =
 
                         cos(y) sin(x) + cos(x) sin(y)
>> combine(f)
??? Error using ==> eval
Conversion to double from sym is not possible.

Error in ==> combine at 51
    eval(evalStr);

i'm using MAPLE TOOLBOX FOR MATLAB V11.0, run this command in MATLAB window