Sometimes when I do, for example, a series expansion Mathematica gives me output that it won't take as input. For example if I do a series expansion:

Series[Hypergeometric2F1[a,x,y,z], {a,0,0} ]


Out[xx]= 1+ a Hypergeometric2F1^(1,0,0,0)[0,x,y,z] + O[a]^2

If I literally then click on this cell and evaluate it as input, or alternatively cut and paste this term into another input line and evaluate it returns the following error:

Syntax::sntxf: "(" cannot be followed by "1,0,0,0)".

Syntax::sntxi: Incomplete expression; more input is needed .

So it doesn't seem to like the exact form as input that it just gave me as output. What gives?


1) I apologize for the formatting errors in the posting and the confusion that resulted, that should be fixed now. Thank you to those that pointed them out.

2) I have tried the suggestions to use InputForm[%]-the thing this, the expressions I am dealing with are very long, and when I put it into input-form they become unwieldy. I would prefer a way to retain the standard-form expression and manipulate that - but this might be impossible (it seems like it is impossible).

Thanks for the help so far anyway.

  • $\begingroup$ This indicates that you took derivatives in the wrong way somewhere. To track it down, you have to provide a minimal example of the code that produced this output line. $\endgroup$
    – Jens
    Commented Jun 6, 2012 at 15:27
  • 3
    $\begingroup$ Some types of output can't be interpreted as input if you re-type them yourself. One example would be $f^{(1,0)}[x]$. However, when these are produced as output, they usually contain hidden information (in the form of a TagBox) that allows the system to interpret them again without ambiguity, even if you copy and paste them in full. Try for example evaluating Derivative[1, 0][f][x] to produce such an output. If you copy and paste them partially, or edit them, this information may get lost. $\endgroup$
    – Szabolcs
    Commented Jun 6, 2012 at 15:30
  • $\begingroup$ Please include Mathematica-Code as Code in your post. Click on the help button in the editor to see how this works. $\endgroup$
    – halirutan
    Commented Jun 6, 2012 at 15:48
  • $\begingroup$ HypergeometricF1 isn't a Mathematica function. Do you mean Hypergeometric2F1? $\endgroup$ Commented Jun 6, 2012 at 15:51
  • 3
    $\begingroup$ The safest method to copy previous output is to use the key combo Shift+Ctrl+L; that way, any (invisible) formatting is preserved. $\endgroup$ Commented Jun 6, 2012 at 16:00

2 Answers 2


Use InputForm to get something you always can copy&paste:

Series[Hypergeometric2F1[\[Epsilon], x, y, z], {\[Epsilon], 0, 1}]//InputForm
==> SeriesData[\[Epsilon], 0, {1,
    Derivative[0, 1, 0, 0][Hypergeometric2F1][x, 0, y, z]}, 0, 2, 1]

If you want it as normal expression, use //Normal//InputForm instead.


You need to convert the power series into a normal expression using

Series[Hypergeometric2F1[\[Epsilon],x,y,z], {\[Epsilon],0,1}]//Normal 
  • $\begingroup$ Actually I did this in the actual code myself but it doesn't help. I just left it out here. As you can see from the errors the problem is with the (0,1,0,0). Thanks for the help though. $\endgroup$
    – DJBunk
    Commented Jun 6, 2012 at 16:35

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.