解決MATLab Symbolic_Toolbox License 許可證無效的問題。我分享的上一個(gè)license中沒有包含該license,這個(gè)license明顯大很多，應(yīng)該是完整的 Error using sym License checkout failed. License Manager Error -5 Cannot find a license for Symbolic_Toolbox. Troubleshoot this issue by visiting: http://www.mathworks.com/support/lme/R2012b/5 Diagnostic Information: Feature: Symbolic_Toolbox License path: C:\Users\Administrator\AppData\Roaming\MathWorks\MATLAB\R2012b_licenses;E:\1_Program_File\Matlab\licenses\license.dat;E:\1_Program_File\Matlab\licenses\*.lic Licensing error: -5,357. Error in syms (line 66) assignin('caller',x,sym(x)); Error in Test (line 2) syms x 使用方法，將本文件解壓縮，到MATLAB安裝路徑/license/下替換掉license.dat即可，本許可證僅供學(xué)習(xí)交流，切勿用于非法用途，所產(chǎn)生后果由使用者自負(fù)。