issues with syms function
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Whenever I use the syms (symbolic function) code I keep getting errors, even on simple codes that I am sure they are correct.
For example this simple code
syms a [1 4]
a
The output
Error in syms (line 227)
defined = sym(zeros(1, length(args)));
Error in quiz (line 1)
syms a [1 4]
9 个评论
Ameer Hamza
2020-10-8
编辑：Ameer Hamza
2020-10-8
What is the complete error message? Can you show the output of
which sym -all
Reem Alblooshi
2020-10-8
Walter Roberson
2020-10-8
There would have been more to the error message, such as an error that args was not defined, or that sym was being called as a function by is a script, or something.
Reem Alblooshi
2020-10-8
Ameer Hamza
2020-10-8
Have you tried changing the file sym.m installed by MATLAB? To check, run the following in the command window
edit sym.m
it will open a file. See if the first line of the file is
classdef sym < handle
Reem Alblooshi
2020-10-10
GAGANDEEP KAUR
2020-10-27
I also have some problem with using syms a b c d e , my program keeps on running and when I am pausing it, it is opening sym.m file.
Although first line of the file is
classdef sym< handle
If anyone can help?
Walter Roberson
2020-10-27
restoredefaultpath
rehash toolboxcache
syms x
and see if that works.
I suspect you have a third-party function that is interfering with operation the Mathworks sym.m
GAGANDEEP KAUR
2020-10-27
I have tried as you adviced but still it is keep on running. If possible may you please have a look at attcahed files
采纳的回答
Ameer Hamza
2020-10-10
0 个投票
Most likely scenario is that you somehow overwrote the sym.m file. The only way to fix it is to delete the current installation and reinstall MATLAB.
更多回答（1 个）
madhan ravi
2020-10-8
0 个投票
You have a custom file named sym.m , remove it from the path or rename it.
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