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TI-Basic Brain Teasers =>
TI-BASIC
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kbyoyoa
Newbie
Joined: 21 Apr 2007
Posts: 41
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 Posted: 08 May 2007 07:40:29 pm Post subject: |
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| Hey... Can I post a challenge? |
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baorder54
Elite
Active Member
Joined: 25 Nov 2006
Posts: 748
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| Posted: 08 May 2007 08:07:52 pm Post subject: |
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It better be good...  |
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Xphoenix
Elite
Joined: 04 Apr 2007
Posts: 756
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| Posted: 08 May 2007 08:12:53 pm Post subject: |
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| If you have a challenge, fire away, though I'll have no chance of solving it. |
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Harrierfalcon
The Raptor of Calcs
Super Elite (Last Title)
Joined: 25 Oct 2006
Posts: 2535
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| Posted: 08 May 2007 08:25:46 pm Post subject: |
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No. In no way, under any circumstances are you allowed to post any challenge at all.
[/sarcasm] |
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kbyoyoa
Newbie
Joined: 21 Apr 2007
Posts: 41
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| Posted: 08 May 2007 09:07:36 pm Post subject: |
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OK here it is...
make a program that calculates the first 100 digits of pi and displays them on the screen.
You can't at all use the character for pi
Make the smallest program that does this... Extra points for the best algorithm to calculate pi.
Last edited by Guest on 08 May 2007 09:08:05 pm; edited 1 time in total |
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Weregoose
Authentic INTJ
Super Elite (Last Title)
Joined: 25 Nov 2004
Posts: 3976
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| Posted: 08 May 2007 10:14:46 pm Post subject: |
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| Am I to assume that you've done this yourself? |
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baorder54
Elite
Active Member
Joined: 25 Nov 2006
Posts: 748
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| Posted: 08 May 2007 10:23:27 pm Post subject: |
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There was a couple of posts somewhere about how to get pi without using pi. Can't find them atm.  |
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Xphoenix
Elite
Joined: 04 Apr 2007
Posts: 756
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thornahawk
μολών λαβέ
Active Member
Joined: 27 Mar 2005
Posts: 569
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| Posted: 09 May 2007 06:16:11 am Post subject: |
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Hundred digits, huh? You'll have to manipulate the digits as lists, then, 'cause TI calculators can only retain 14 decimal places tops. :P
AGM's the best I've seen one can use to calculate the constant to many places. ;)
Anyway... doesn't anyone want to attempt the challenge I posted earlier? It's easier. ;)
thornahawk |
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kbyoyoa
Newbie
Joined: 21 Apr 2007
Posts: 41
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| Posted: 09 May 2007 04:28:08 pm Post subject: |
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I figured ouot how to calculate the digits i just can figure out how to make it show all 100 and not just 3.141592653 and cut off...
EDIT: since the pi button will only give you 10 digits I will let you use it.
EDIT: I think I figured out how to do it...
Last edited by Guest on 09 May 2007 04:33:28 pm; edited 1 time in total |
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thornahawk
μολών λαβέ
Active Member
Joined: 27 Mar 2005
Posts: 569
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| Posted: 09 May 2007 07:00:14 pm Post subject: |
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"...since the pi button will only give you 10 digits I will let you use it."
Um, the built-in constant has 14 decimal places stored. You'll see the other digits if you subtract out the first few digits. ;)
"...I think I figured out how to do it..."
In TI-BASIC? :o
++++++++++++++++
Anyway... can the takers of the Kronecker product challenge please post what they have so far? ;)
thornahawk |
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kbyoyoa
Newbie
Joined: 21 Apr 2007
Posts: 41
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| Posted: 09 May 2007 08:07:07 pm Post subject: |
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kbyoyoa wrote: I figured ouot how to calculate the digits i just can figure out how to make it show all 100 and not just 3.141592653 and cut off...
EDIT: since the pi button will only give you 10 digits I will let you use it.
EDIT: I think I figured out how to do it...
[post="103504"]<{POST_SNAPBACK}>[/post]
Yes, in TI-BASIC...
Using a few different formulas.
I made the program, but im working out a few bugs. |
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Weregoose
Authentic INTJ
Super Elite (Last Title)
Joined: 25 Nov 2004
Posts: 3976
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| Posted: 17 May 2007 06:45:02 pm Post subject: |
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| Meanwhile... kbyoyoa wrote: make a program that calculates the first 100 digits of pi and displays them on the screen. Based on an article (PDF) I found, I wrote:[font="courier new;font-size:9pt;line-height:100%;color:darkblue"]2binomcdf(Ans,0→X
Repeat 0
10LX→X
For(X,dim(Ans),2,‾1
2X-1→Y
Ans‾ยนLX(X→Z
X-1
LX(Ans)+Ansint(Y→LX(Ans
round(YfPart(Z),0→LX(X
End
.1LX(1
Disp int(Ans
10fPart(Ans→LX(1
End
The larger the value in [font="courier new;font-size:9pt;line-height:100%;color:darkblue"]Ans, the longer the list of twos in the setup ⇒ the more digits that are returned accurately. I was hoping that this would meet the challenge when I started writing it, but it does fail in that regard. As of now, this is only proof-of-concept, and by no means practical. (Virtual TI shows that a list length of 99 is just barely enough to get 15 correct digits after the decimal point, whereas a length of 999 doesn't improve the results at all.) It's also painfully slow even for a small amount of good digits, so the only advantage that this carries is its smallish size of 112 bytes. My calculator will have about that much extra room back once I submit this post. 
Last edited by Guest on 15 Jun 2007 02:48:30 am; edited 1 time in total |
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