Error in using syms

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Emin Kursat Dogray
Emin Kursat Dogray 2020-12-23
评论： Walter Roberson 2020-12-23
Hello.
I have a problem with syms. My MATLAB R2020b doesn't respond my syms commands. Please help me.
For example;
syms x
e = x^2 -9
solve(e)
Results:
Error using sym
Too many input arguments.
Error in syms (line 227)
defined = sym(zeros(1, length(args)));
Error in Untitled31 (line 1)
syms x
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Emin Kursat Dogray
Emin Kursat Dogray 2020-12-23
I think I accidentally overwritten the file I was working on. How can I fix?
Walter Roberson
Walter Roberson 2020-12-23
If you overwrote sym.m then unless you have a backup, you will need to reinstall the Symbolic toolbox

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