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New Blog: Factorials



#2

Factorial of Large Numbers

The might of the 50g is demonstrated. It think it is the first time I typed a 181 digit number. Program for the 39gii is included.

Eddie


#3

Just FYI, all factorials you mentioned in your blog may be calculated directly on a WP 34S in DBLON mode :-)


#4

More importantly, the 34S includes a Log Gamma function which effectively calculates the sum of the logarithms directly.

- Pauli


#5

So does the HP-50g, but the wp 34S is more accurate:

001 LBL A
002 INC X
003 LNGamma
004 # 010
005 LN
006 /
007 IP
008 RCL L
009 FP
010 10^x
011 END

111 A --> 1.76295255109
x<>y --> 180.

On the HP 50g,

111 ENTER
<< 1. + LOGGAMMA 10.
LN / DUP IP SWAP FP
ALOG
>>
EVAL
will return
                       180.
1.76295255248

Gerson.


#6

Learning the upgraded WP 34S on my list of things to do.

#7

Quote:
It think it is the first time I typed a 181 digit number.

Do it on the 50G emulator, then "Save Object". Run HPUserEdit, then import it with "File" -> "Import" and then you can copy the number. (You can also save it as a variable on the real 50G and copy it to a PC with the SD card, and import into HPUserEdit).

Thanks for your blogs, they're always interesting.

#8

Quote:

Do it on the 50G emulator, then "Save Object". Run HPUserEdit, then import it with "File" -> "Import" and then you can copy the number. (You can also save it as a variable on the real 50G and copy it to a PC with the SD card, and import into HPUserEdit).

Thanks for your blogs, they're always interesting.


Thank you Bart. Copying the number is a lot easier than typing the number out.

Update:

Bart, I have posted another entry rearding factorials, basically an introduction to factorials - inspired by my dad. (no programs this time though)


Edited: 23 Oct 2012, 9:28 a.m.


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