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Topic: The Charlwood Fifty
Replies: 52   Last Post: Jun 24, 2013 10:24 PM

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clicliclic@freenet.de

Posts: 997
Registered: 4/26/08
Re: The Charlwood Fifty
Posted: May 25, 2013 12:44 AM
  Click to see the message monospaced in plain text Plain Text   Click to reply to this topic Reply


By now a number of messages were sent to this thread which did not make
it to the Aioe.org NNTP server in Italy.

on May 23, 04:39 PM by Albert D. Rich
on May 23, 08:01 PM by Waldek Hebisch
on May 24, 10:01 AM by Andreas Dieckmann

The timestamps are those displayed on Drexel's Math Forum. As the last
message is also missing on Google Groups, it was probably posted on Math
Forum only. Hopefully communication will be restored soon!

-

This is my antiderivative for problem #45 from Charlwood's appendix:

SQRT(2)*SQRT(SEC(x)+1)*SQRT(SEC(x)-1)*COT(x)*(SQRT(SQRT(2)-1)*AT~
AN(SQRT(SQRT(2)-1)*(SQRT(SEC(x)+1)-SQRT(SEC(x)-1)-SQRT(2))/(SQRT~
(2)*SQRT(SQRT(SEC(x)+1)-SQRT(SEC(x)-1))))-SQRT(SQRT(2)+1)*ATAN(S~
QRT(SQRT(2)+1)*(SQRT(SEC(x)+1)-SQRT(SEC(x)-1)-SQRT(2))/(SQRT(2)*~
SQRT(SQRT(SEC(x)+1)-SQRT(SEC(x)-1))))+SQRT(SQRT(2)-1)*ATANH(SQRT~
(2*SQRT(2)+2)*SQRT(SQRT(SEC(x)+1)-SQRT(SEC(x)-1))/(SQRT(SEC(x)+1~
)-SQRT(SEC(x)-1)+SQRT(2)))-SQRT(SQRT(2)+1)*ATANH(SQRT(2*SQRT(2)-~
2)*SQRT(SQRT(SEC(x)+1)-SQRT(SEC(x)-1))/(SQRT(SEC(x)+1)-SQRT(SEC(~
x)-1)+SQRT(2))))

which holds on the entire complex plane.

Martin.


Date Subject Author
5/23/13
Read The Charlwood Fifty
Albert D. Rich
5/23/13
Read Re: The Charlwood Fifty
Nasser Abbasi
5/23/13
Read Re: The Charlwood Fifty
clicliclic@freenet.de
6/16/13
Read Re: The Charlwood Fifty
clicliclic@freenet.de
6/16/13
Read Re: The Charlwood Fifty
Nasser Abbasi
6/17/13
Read Re: The Charlwood Fifty
clicliclic@freenet.de
6/17/13
Read Re: The Charlwood Fifty
Nasser Abbasi
6/17/13
Read Re: The Charlwood Fifty
clicliclic@freenet.de
6/17/13
Read Re: The Charlwood Fifty
Nasser Abbasi
6/17/13
Read Re: The Charlwood Fifty
Waldek Hebisch
6/18/13
Read Re: The Charlwood Fifty
Albert D. Rich
6/24/13
Read Re: The Charlwood Fifty
clicliclic@freenet.de
6/24/13
Read Re: The Charlwood Fifty
Albert D. Rich
5/23/13
Read Re: The Charlwood Fifty
Albert D. Rich
5/23/13
Read Re: The Charlwood Fifty
Waldek Hebisch
5/24/13
Read Re: The Charlwood Fifty
Andreas Dieckmann
5/25/13
Read Re: The Charlwood Fifty
clicliclic@freenet.de
6/1/13
Read Re: The Charlwood Fifty
clicliclic@freenet.de
6/3/13
Read Re: The Charlwood Fifty
Albert D. Rich
6/6/13
Read Re: The Charlwood Fifty
clicliclic@freenet.de
6/6/13
Read Re: The Charlwood Fifty
Nasser Abbasi
6/6/13
Read Re: The Charlwood Fifty
clicliclic@freenet.de
6/8/13
Read Re: The Charlwood Fifty
clicliclic@freenet.de
6/8/13
Read Re: The Charlwood Fifty
Albert D. Rich
6/8/13
Read Re: The Charlwood Fifty
clicliclic@freenet.de
6/8/13
Read Re: The Charlwood Fifty
clicliclic@freenet.de
6/9/13
Read Re: The Charlwood Fifty
Albert D. Rich
6/9/13
Read Re: The Charlwood Fifty
Nasser Abbasi
6/9/13
Read Re: The Charlwood Fifty
Albert D. Rich
6/9/13
Read Re: The Charlwood Fifty
Nasser Abbasi
6/10/13
Read Re: The Charlwood Fifty
clicliclic@freenet.de
6/10/13
Read Re: The Charlwood Fifty
Nasser Abbasi
6/10/13
Read Re: The Charlwood Fifty
Nasser Abbasi
6/12/13
Read Re: The Charlwood Fifty
Nasser Abbasi
6/13/13
Read Re: The Charlwood Fifty
clicliclic@freenet.de
6/13/13
Read Re: The Charlwood Fifty
Nasser Abbasi
6/13/13
Read Re: The Charlwood Fifty
Waldek Hebisch
6/13/13
Read Re: The Charlwood Fifty
Nasser Abbasi
6/13/13
Read Re: The Charlwood Fifty
Waldek Hebisch
6/14/13
Read Re: The Charlwood Fifty
clicliclic@freenet.de
6/14/13
Read Re: The Charlwood Fifty
Waldek Hebisch
6/14/13
Read Re: The Charlwood Fifty / Sage and sympy
Richard Fateman
6/14/13
Read Re: The Charlwood Fifty
clicliclic@freenet.de
6/9/13
Read Re: The Charlwood Fifty and Macsyma
Richard Fateman
6/9/13
Read Re: The Charlwood Fifty and Macsyma
Albert D. Rich
6/9/13
Read Re: The Charlwood Fifty, another Macsyma result
Richard Fateman
6/9/13
Read Re: The Charlwood Fifty, another Macsyma result
Albert D. Rich
6/10/13
Read Re: The Charlwood Fifty, another Macsyma result
Richard Fateman
6/10/13
Read Re: The Charlwood Fifty, another Macsyma result
clicliclic@freenet.de
6/10/13
Read Re: The Charlwood Fifty, another Macsyma result
Waldek Hebisch
6/11/13
Read Re: The Charlwood Fifty, another Macsyma result
Nasser Abbasi
6/11/13
Read Re: The Charlwood Fifty, another Macsyma result
clicliclic@freenet.de
6/11/13
Read Re: The Charlwood Fifty, another Macsyma result
Nasser Abbasi

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