Why the error is showing: Attempt to execute SCRIPT syms/<matlab file name> as a function:

syms s;
p=3;
g=int(s^2,1,p);

Answer 1

[Walter Roberson]

That can occur if your MATLAB path is messed up, or your toolbox cache, or your installation is corrupt. The file it is finding is probably the .m file that is used only to hold the help documentation. See the command "rehash" for rebuilding the cache.

A common cause for this seems to be manually copying toolboxes from one system to another instead of doing a real installation.

[nlitz]

Could you suggest any troubleshooting techniques for these reasons?

[Walter Roberson]

restoredefaultpath
rehash toolbox