Trying to do this for a program

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Trying to do this for a program

(account deleted) 28 Aug 2018 20:12

Hello again (sorry for all the posts), I am trying to calculate the nth digit of Pi and stick it in a TI-BASIC program, here is a formula I found in WikiPedia:

But, every time I try to type this in, my calculator crashes. Is there any other way simpler to accomplish this?

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Hewwo, my name is Achak Claw. I was formerly BioHazard.

Re: Trying to do this for a program

Myles_Zadok 28 Aug 2018 22:08

Unless you have a calculator with a computer algebra system (CAS), you're probably not going to be able to make a program with that formula. Unless you plan on creating a CAS program for TI-83/84 calculators, of course.

Re: Trying to do this for a program

kg583 29 Aug 2018 02:09

It looks like you're trying to use the Bailey-Borwein-Plouffe formula the extract the nth digit of $\pi$. A few things to consider:

• The BBP can give the nth hexadecimal digit, which doesn't easily correspond to a decimal digit
• You should read over the Wikipedia article rather than just blindly copying formulas. The article literally details steps to solve some of the problems you are having.
• Your calculator is probably crashing because of an ERR:OVERFLOW from the $16^k$ factor; the max allowed k is 80.

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The solution to a complex problem is often a simple answer.