what can I do for error in using syms command

in my program I used this command syms t

and when I RUN this program in command window this error was appeared

"Undefined function 'syms' for input arguments of type 'char'." how can I fix it?

Answer 1

[Walter Roberson]

You need to have the Symbolic Mathematics Toolbox installed and licensed.

The Symbolic Toolbox is included in the Student Version (but might not be installed by default), but is an optional (extra-cost) package for the other classes of MATLAB license.

Try

which -all syms

If it shows a file then you might already have the toolbox installed, in which case it would be a license matter.