Seconds since 1970

 BBS: Inland Empire Archive
Date: 03-20-93 (14:36)             Number: 123
From: INBAR RAZ                    Refer#: NONE
  To: FRANCIS BURIANEK              Recvd: NO  
Subj: Seconds since 1970             Conf: (1) 80xxx

 > You say you know pi to 90???
 > I learnt pi to 50, and after a year, decided that was not enough, so I
 > learnt another 50 in 5 days...
 > Anyways, excuse me.
 > I learnt it from a sheet of paper I got from a friend, it had 2500!!!
 > I've gone a bit rusty since then, but I should still have it to 90. I am
 > , however interested in the most precise (I heard there were quite a
 > few) version of the formula. Could you inform me about it?

Since this is off-topic, please do NOT reply. Just read.

The accurate, yet probably the slowest formula to Pi is:

4   4   4   4
- - - + - - - ...
1   3   5   7


Formula:

             4
An = -----------------
     (2n-1)*(-1^(n+1))

Inbar Raz

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