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TI-60: Triangle Numbers
12-16-2018, 09:56 PM
Post: #4
RE: TI-60: Triangle Numbers
(12-16-2018 05:33 PM)Dieter Wrote:  In real life, if you want the sum of all integers from 1 to n you'd of course use the direct formula ½n(n+1) or ½(n²+n). Less steps, direct result.

The TI-60 provides an nCr key with a bit weird usage:
Quote:The values of n and r are entered as n.rrr.

Thus we could use:
Code:
+
1.002
=
nCr

Cheers
Thomas
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Messages In This Thread
TI-60: Triangle Numbers - Eddie W. Shore - 12-16-2018, 03:35 AM
RE: TI-60: Triangle Numbers - Dieter - 12-16-2018, 05:33 PM
RE: TI-60: Triangle Numbers - grsbanks - 12-16-2018, 07:08 PM
RE: TI-60: Triangle Numbers - Thomas Klemm - 12-16-2018 09:56 PM
RE: TI-60: Triangle Numbers - ijabbott - 12-17-2018, 02:55 PM
RE: TI-60: Triangle Numbers - Thomas Klemm - 12-19-2018, 04:23 AM



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