How can I change the symbol z to w in this figure?

In the following figure, how can I change the symbol z to w in this figure because I do not want to be confused with other z in the functions, and $f b(1/z)$. (z which wants to change circled by red ).

I appriciate any help.

Thanks

[Satwik]

Can you provide the code for the above plot.

Answer 1

[Sam Chak]

Hi @Aisha Mohamed

It is possible to labels of the data tips. Please refer to this example.

https://www.mathworks.com/help/matlab/creating_plots/create-custom-data-tips.html#mw_f65ad01c-1c19-4e14-860e-0e40bb867731