Hello, I wrote anarticle about the current position of the HP50g :
http://www.calc-bank.com/index.php?mod=news&ac=commentaires&id=1812
What do you think about that ?
Focus on the HP50g
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01-21-2013, 03:25 AM
Hello, I wrote anarticle about the current position of the HP50g : What do you think about that ?
01-21-2013, 04:34 AM
Bonjour Mic, That article would most probably start differently if written by an US-American ;-) No, no errors - but lacking that famous primary positive (marketing) attitude. d:-)
01-21-2013, 07:06 AM
I am not totally negative :)
01-21-2013, 07:52 AM
Quote: Short and sweet. How did you get pictures of the developers?
01-21-2013, 08:18 AM
Look at the article and click, then look again ... d#-)
01-21-2013, 08:42 AM
Sounds about right. I'm not sure ageing is an issue. Maths doesn't fundamentally change that much. In fact, my now ancient TI-85 is pretty good at "modern maths"... Has anyone got a comparison between the 39g series and a 50g anywhere just out of interest?
01-21-2013, 12:06 PM
Been a while since I've looked at the capabilities of the CAS in the classpad. If you have time, could you test these ones out? Thanks!
integrate(1/(x^2+9)^3,x)
TW Edited: 21 Jan 2013, 12:07 p.m.
01-21-2013, 01:23 PM
General integration limits 0 and 1 ?
01-21-2013, 05:58 PM
To see if it will recognize the series representation in that one. Comes out to pi/12 if I remember. TW
01-22-2013, 09:18 PM
Quote:
Hi Mic, To solve the example on the HP-50g just use the 'TAYLR' or 'TAYLOR0' function (on the same soft menu as 'lim') to re-write the equation in terms of x and then take the limit. I'm not sure why the HP-50g requires this additional step but the shape of the function is somewhat unique for the x^4 denominator vs trying other powers of x in the denominator. I did a little experimenting with limits close to zero on the HP-50g and found that you can find an approximate answer to the example by taking the limit at x= +/- 1/100. I don't know what software/hardware you were using to verify the correct limit of -1/12 for this example but I found the TI-89 gives the correct result as well as WolframAlpha. However, what was surprising to me is that if you try different denominators of increasing powers of x, such as, x^5, X^6, X^7, X^8, X^9....X^44 the TI-89 fails to find a limit it reports 'undef' while the HP-50g finds all these limits without the additional step noted above and agrees with WofframAlpha for the limit values. I don't think I found your article about the HP-50g unless it was about the hidden menus (Easter eggs). Was that it or did I miss something? Were you trying to promote HP-50g sales on Amazon? The Easter Eggs are interesting but not new. I believe they have existed in various forms from the HP-48 through the HP-50g. For starters check out http://groups.google.com/group/comp.sys.hp48/browse_thread/thread/a1bf7a0607cb526/65bfa1c5264fc28b?lnk=gst&q=easter+eggs#65bfa1c5264fc28b Ronald Williams
01-23-2013, 01:58 AM
Like this :
http://www.calc-bank.com/index.php?mod=news&ac=commentaires&id=1678 Edited: 23 Jan 2013, 1:58 a.m.
01-23-2013, 07:44 AM
Quote: The comparison sounds like an interesting project.
01-23-2013, 07:45 AM
Quote: Thanks
01-23-2013, 10:47 PM
Regarding the easter eggs, I think HP removed some of them in the latest roms. I'm running 2.09 and I don't think the ON-F4 easter eggs are present on mine. Or maybe I'm just doing something wrong when trying to activate them. Dave |
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