50g at Yahoo! Groups

firmware 2.15

jimbostrudel — Mon, 19 Oct 2009 19:37:36 GMT

I didn't see any mention of this yet (though my email's acting up today so searching was a bit of a pain). From

Re: nth derivative

gems_tux — Thu, 15 Oct 2009 18:07:25 GMT

I solved the problem by moving SIMP after NEXT :-) : \<< \-> F V N \<< F XQ 1 N FOR K V DERIV NEXT \>> SIMPLIFY \>> 'STO' DERVN 'F(X,Y)=X*Y/(X^2+Y^2)' 'Y' 2

nth derivative

gems_tux — Thu, 15 Oct 2009 15:57:43 GMT

I wrote a simple program for calculating the nth derivative: \<< \-> F V N \<< F XQ 1 N FOR K V DERIV SIMPLIFY NEXT \>> \>> 'DERVN' STO 'Function' 'Variable'

Re: upgrade to new rom.

vjwolf3@... — Wed, 14 Oct 2009 00:54:25 GMT

Gary Other considerations would be the O/S of your system and the actual zip utility used to install the update, personally after searching the net for one

Re: upgrade to new rom.

vjwolf3@... — Mon, 12 Oct 2009 19:17:51 GMT

Gary, A number of 50g user's are experiencing the same problem and it can easily be remedied by callling HP Calculator support at 1-800-443-1254 option 3 then

Re: upgrade to new rom.

Gary — Mon, 28 Sep 2009 17:42:25 GMT

... Yes the original instructions were a combination of the PDF included with the zip 2.15 rom upgrade file and what the connectivity software told me to do.

Re: Linear regression - Regressão linear

ddhart1 — Fri, 25 Sep 2009 01:05:29 GMT

For polynomial regression I find the PREGR useful: hp48 http://www.hpcalc.org/details.php?id=1263 hp49 http://www.hpcalc.org/details.php?id=3151

Re: Linear regression - Regressão linear

geoyaaoo — Thu, 24 Sep 2009 12:12:12 GMT

... go to this address http://tech.groups.yahoo.com/group/50g/files/%20Basic%20Variance-Covariance%20Matrices/

Re: upgrade to new rom.

Tim — Wed, 23 Sep 2009 17:24:30 GMT

... Which ROM version? 2.15 or an earlier one? Were the instructions in a PDF or just plain text? If it was an earlier one, you should grab 2.15

Re: upgrade to new rom.

Gary — Wed, 23 Sep 2009 04:29:14 GMT

... The original instructions were from the actual HP Zip file upgrade download. I did use the + and - keys held them for 3 seconds while pushing the reset as

Re: upgrade to new rom.

Tim — Mon, 21 Sep 2009 23:28:40 GMT

... Which file were you using for the ROM upgrade and was the upgrade document one that had screenshots in it? I ask because I wrote the thing and haven't

Re: upgrade to new rom.

garyfiber — Sat, 19 Sep 2009 18:44:27 GMT

... Well after I whined here I found a web page that described how to do the upgrade. It seemd to have worked perfectly. I was trying to use the instructions

upgrade to new rom.

Gary — Sat, 19 Sep 2009 18:08:06 GMT

The HP-50G is such a pain in the backside to get into upgrade mode. I can't go to the upgrade mode to save my life. Did it once about a year ago. It just keeps

Re: where is variable t

Don Hart — Fri, 11 Sep 2009 04:03:21 GMT

Is T supposed to be a function of X? If not, it will be treated as a constant. If it is a function of X then you can proceed as follows. I'll make it a little

Re: where is variable t

Marcus Fazzi (Anunakin) — Thu, 10 Sep 2009 11:31:08 GMT

You can derive one by one variable, not too at same time. 2009/9/10 J ... -- Marcus Fazzi オープンソースコード