I got that result. But how would you use (3) to calculate the the number of terms required to get to a given accuracy using direct calculation.
For example, for I have already found that, to get digits of accuracy you would require
terms. I want to do a similar thing with . Can you help?
Thanks
If You intend to use that formula, then what You can do is to extimate the minimum value of s that gives an error . If You write...
(1)
... then the condition is approximately...
(2)
If You uses two terms of the series writing then You write...
(3)
... and the condition is approximately...
(4)
Now You can proceed increasing the terms till to arrive to the required accuracy...
Kind regards