Can't use toolbox

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I CHUN LIN
I CHUN LIN on 14 Apr 2021
Commented: Rik on 14 Apr 2021
Hi,
I want to run the code:
clear
clc
syms k
y = symsum(k^2,k,0,10)
but the result says:
'syms' requires Symbolic Math Toolbox.
I back to check my download and use "ver",
the result shows there is Symbolic Math Toolbox.
Does there is anything wrong?
Thank you very much!
  1 Comment
Rik
Rik on 14 Apr 2021
You could try
rehash toolboxcache

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