how to write equation in legend correctly in latex

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I am trying to write following legend using latex interpreter but I keep getting this error:
"String scalar or character vector must have valid interpreter syntax"
This is my legend information. 'a' is just a number defined in the script. Suggestions will be highly appreciated.
Dharma
legend(['$t_{1}=t_{2}± $' num2str(a*100)])
set(legend,'Interpreter','latex');
set(legend,'FontSize',10);

Answers (1)

Scott MacKenzie
Scott MacKenzie on 6 Mar 2022
Edited: Scott MacKenzie on 6 Mar 2022
MATLAB by default uses a subset of TeX. That's probably all you need:
% test data
a=1.2345;
plot(rand(1,5));
legend(['t_{1}=t_{2}±' num2str(a*100)]);
set(legend,'FontSize',10);

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