MATLAB Answers

"syms", "sym", and "mupad" functions cause MATLAB to freeze

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Shuvashis Saha
Shuvashis Saha on 15 Jan 2020
Answered: Stephan on 15 Jan 2020
Why does MATLAB hang when I try to use the "syms", "sym""syms", "sym", or "mupad" functions?
It causes MATLAB to run indefinitely, the system freezes and memory usage increases.
Sometimes errors also appear:
Error using mupadmex
Internal error with symbolic engine. Quit and restart MATLAB.
Error in symengine
Error in sym (line 185)
symengine;
MATLAB Version: 9.3.0.713579 (R2017b)
Operating System: Linux 5.3.7-200.fc30.x86_64 #1 SMP Fri Oct 18 20:13:59 UTC 2019 x86_64
Java Version: Java 1.8.0_121-b13 with Oracle Corporation Java HotSpot(TM) 64-Bit Server VM mixed mode

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Answers (1)

Stephan
Stephan on 15 Jan 2020
R2017b had this bug, but it was fixed in update 7 and following. Try to install the latest update for your release - see Step 2:

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