PARI/gp  Printable Version + Tetration Forum (https://math.eretrandre.org/tetrationforum) + Forum: Tetration and Related Topics (https://math.eretrandre.org/tetrationforum/forumdisplay.php?fid=1) + Forum: Computation (https://math.eretrandre.org/tetrationforum/forumdisplay.php?fid=8) + Thread: PARI/gp (/showthread.php?tid=1166) Pages:
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PARI/gp  Xorter  04/17/2017 Hi, again! I need your help in PARI/gp. I would like to substitute a value into x of sin(x): Code: subst(sin(x),x,1) RE: PARI/gp  Gottfried  04/17/2017 (04/17/2017, 09:48 AM)Xorter Wrote: Hi, again! Code: subst(Pol(sin(x)),x,1) Code: sin(1) RE: PARI/gp  Xorter  04/17/2017 (04/17/2017, 04:27 PM)Gottfried Wrote:(04/17/2017, 09:48 AM)Xorter Wrote: Hi, again! Oh, it was simplier than I thought. Thank you, my friend! Well, because I have found a new type of integration and derivation. These are iterated! And I needed substitution in a function in my gp. Really amazing. I am going to share my results on this forum as soon as possibly. (May be the key to determine what between addition and multiplication is.) Just wait a few days, please. RE: PARI/gp  Xorter  04/17/2017 But somewhy it does not work with gamma function. RE: PARI/gp  sheldonison  04/18/2017 (04/17/2017, 07:05 PM)Xorter Wrote: But somewhy it does not work with gamma function. sin(x+1) or gamma(x+1) RE: PARI/gp  Xorter  04/18/2017 (04/18/2017, 05:37 AM)sheldonison Wrote:(04/17/2017, 07:05 PM)Xorter Wrote: But somewhy it does not work with gamma function. I have determined the graphs with sin functions, but now I would like to work with gamma, too. These methods are the generalizations of the integration and derivation... RE: PARI/gp  Xorter  11/20/2017 Hi, again! Here is another problem. I would like to calculate this productum but without success: Code: subst(exp(1/x),x,1/1000) RE: PARI/gp  Gottfried  11/21/2017 (11/20/2017, 08:21 PM)Xorter Wrote: Hi, again! The error message in my (old) Pari/GPsystem is Quote:exp(1/'x) I don't think they have anything new implemented for this problem so far. RE: PARI/gp  Xorter  11/21/2017 I got the following error message: *** at toplevel: subst(exp(1/x),x,1/1000) *** ^ *** exp: domain error in exp: valuation < 0 My question is that how can we solve this problem? RE: PARI/gp  Gottfried  11/21/2017 (11/21/2017, 01:31 PM)Xorter Wrote: I got the following error message: Perhaps it is meaningful for you to replace 1/x by exp(u) where u=log(x) ? At least this gives a power series (more precisiely a puisieuxseries) 