为什么我的Matlab（2016b）不能syms x，已有工具箱

Matlab，2016b for mac ,when i put(maybe here use write, sorry, i will prove my english) in sym x(or syms x y ),then it print: >> sym x Error using mupadmex Error in MuPAD command:

Error in symengine

Error in sym (line 173) [~] = symengine;

>> syms x Error using mupadmex Error in MuPAD command:

Error in sym>cell2ref (line 1281) S = mupadmex(y);

Error in sym>tomupad (line 1219) S = cell2ref(numeric2cellstr(x));

Error in sym (line 179) S.s = tomupad(x);

Error in syms (line 144) toDefine = sym(zeros(1, 0)); so i can't use one most important part.ask for help.

Answer 1

[tianlin liu]

Maybe your matlab is cracked version.