MATLAB: Syms x – Not enough input arguments.

argumentssyms

>> syms x
Not enough input arguments.
Error in digits (line 3)
for i=1:length(s)
Error in sym (line 192)
S.Digits = digits;
Error in syms (line 227)
defined = sym(zeros(1, length(args)));
>> ver
MATLAB Version 9.8 (R2020a)
Simulink Version 10.1 (R2020a)
Symbolic Math Toolbox Version 8.5 (R2020a)
>> which syms
C:\Program Files\Polyspace\R2020a\toolbox\symbolic\symbolic\syms.m
Comment: It looks like matlab can find and call the function. Any explaination or suggestion regarding the error is greatly appreciated.

Best Answer

Is it possible you have overwritten the digits function?
>> which digits
C:\Program Files\MATLAB\R2020a\toolbox\symbolic\symbolic\digits.m
My R2020a file does not contain a line "for i=1:length(s)" anywhere in it. Your error message suggests it is line 3.
When I create a local digits function (saved in the current folder), I get the following error message.
Not enough input arguments.
Error in digits (line 3)
for i=1:length(s)
Error in sym (line 201)
        S.Digits = digits;
Error in sympref>implementedSymprefs (line 154)
   y = {'FourierParameters', sym([1,-1]), 'MuPAD', 'sym', {};...
Error in sympref (line 90)
  iSymprefs = implementedSymprefs;
Error in symengine
Error in sym (line 200)
        symengine;
Error in syms (line 227)
defined = sym(zeros(1, length(args)));
 
Warning: Failed to initialize symbolic preferences. 
> In symengine
  In sym (line 200)
  In syms (line 227) 
Not enough input arguments.
Error in digits (line 3)
for i=1:length(s)
Error in sym (line 201)
        S.Digits = digits;
Error in syms (line 227)
defined = sym(zeros(1, length(args)));
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