Some of us still prefer the other one: Sum[1/((2k-1)!!),{k,Infinity}]+1/(1+1/(1+2/(1+3/(1+4/.. == Sqrt[E Pi/2] it's shorter. :-) Wouter. -----Original Message----- From: math-fun-bounces@mailman.xmission.com [mailto:math-fun-bounces@mailman.xmission.com] On Behalf Of Bill Gosper Sent: dinsdag 1 maart 2011 4:33 To: math-fun@mailman.xmission.com Subject: [math-fun] It has an e, an i, and a pi in it Even a -1. Why isn't it beautiful? 43 %i %pi --------- 3/4 1/4 1/8 48 1 (8 %i - 9 2 - 6 2 ) %e gamma(-) - %pi 4 (d120) eta(%i %e ) = - ------------------------------------------------ 3/8 3/4 2 2 %pi (c121) EXPAND(BFLOAT(%)); (d121) 1.9655177733257701608b-2 %i + 8.7954174363898772974b-1 = 1.9655177733257701608b-2 %i + 8.7954174363898772974b-1 --rwg _______________________________________________ math-fun mailing list math-fun@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/math-fun =============================== This email is confidential and intended solely for the use of the individual to whom it is addressed. If you are not the intended recipient, be advised that you have received this email in error and that any use, dissemination, forwarding, printing, or copying of this email is strictly prohibited. You are explicitly requested to notify the sender of this email that the intended recipient was not reached.