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[?] Use the command Simplify, Normal etc. to the function inside?

Jacques Ou
Posted 7 years ago

Consider the following code:

{{c20 -> Function[{u}, 
        2^-Pe (2^Pe cinf - B1[1] Gamma[-(Pe/2), u/4])]}}

I want to apply the command Simplify, Normal etc. to the function inside, 

2^-Pe (2^Pe cinf - B1[1] Gamma[-(Pe/2), u/4])

Please tell me the way. Thanks.
POSTED BY: Jacques Ou
2 Replies
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You could try using Activate/Inactivate. For instance:

Activate @ Simplify @ Inactivate[
    {{c20->Function[{u},2^-Pe (2^Pe cinf-B1[1] Gamma[-(Pe/2),u/4])]}},
    Function
]

(* {{c20 -> Function[{u}, cinf - 2^-Pe B1[1] Gamma[-(Pe/2), u/4]]}} *)
POSTED BY: Carl Woll

Here is one way:

{{c20 -> Function[{u}, 
     2^-Pe (2^Pe cinf - B1[1] Gamma[-(Pe/2), u/4])]}};
myFunction = c20 /. %[[1]];
Simplify[myFunction[u]]
POSTED BY: Gianluca Gorni
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