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I hope everyone is doing well. I have a question about mathematica that I have attached here. If you look into the attached picture, then you can see the Derivative of unknown function f[t] in mathematica is represented as f'[t] but the fractional derivative of f[t] does not have any notation. How can I define it? Secondly, if the unknown function involve in the expression, the fractional derivative does not work for whole expression. enter image description here

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    $\begingroup$ What kind of notation do you want for CaputoD? $\endgroup$
    – Domen
    Jun 5, 2023 at 8:40
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    $\begingroup$ It is preferred to post the actual code formatted properly instead of screenshots $\endgroup$
    – bmf
    Jun 5, 2023 at 8:45
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    $\begingroup$ Any notation, like a^{\alpha}[t]. $\endgroup$ Jun 5, 2023 at 9:00
  • $\begingroup$ Actually, I was trying to add the code but I could not. Please look at this and send me your valuable suggestions. $\endgroup$ Jun 5, 2023 at 10:37
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    $\begingroup$ @MuhammadAamirAli See the instructions here: mathematica.stackexchange.com/q/13226/27951. It's hard to help if we can't play with your actual code. If you don't include the code, your question is likely to be close as "missing valid code". $\endgroup$
    – MarcoB
    Jun 5, 2023 at 13:05

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