HP Prime - Cross product suggestion « Next Oldest | Next Newest »

 ▼ bluesun08 Member Posts: 207 Threads: 48 Joined: Feb 2010 11-07-2013, 03:30 PM It will be amazing and user friendly if after pressing the Cross product key automatically come two imput-fields for vectors: cross([],[]) So i can immediately imput the vectors for example cross([1 2 3],[4 5 6]) or cross([a],[b]) if the vectors stored in variable a and b. It also will be helpful in other vector-operations. ▼ Han Senior Member Posts: 709 Threads: 104 Joined: Nov 2005 11-07-2013, 04:29 PM Quote: It will be amazing and user friendly if after pressing the Cross product key automatically come two imput-fields for vectors: cross([],[]) So i can immediately imput the vectors for example cross([1 2 3],[4 5 6]) or cross([a],[b]) if the vectors stored in variable a and b. It also will be helpful in other vector-operations. What if I already have two vectors stored as a and b? Then this would make me have to delete the []'s since I would want to have cross(a,b). One person's convenience may be another's hassle. Edited: 7 Nov 2013, 4:39 p.m. ▼ bluesun08 Member Posts: 207 Threads: 48 Joined: Feb 2010 11-07-2013, 04:51 PM Think different: It would be amazing if the calculator recognize if there a numbers or a variable. For example you have stored [1 2 3] in a and [4 5 6] in b then cross([a],[b]) expand it internally to cross([1 2 3],[4 5 6]) and calculate the result. In another case if i imput cross([7 8 9],[8 7 6]) the calculator recognize the numbers an calculate the result. As I said, it would be amazing. ▼ Gerson W. Barbosa Posting Freak Posts: 2,761 Threads: 100 Joined: Jul 2005 11-07-2013, 05:44 PM Quote: As I said, it would be amazing I think you're ahead of your time :-) ▼ bluesun08 Member Posts: 207 Threads: 48 Joined: Feb 2010 11-07-2013, 06:22 PM I write my postings on an apple. And as you can see in the video, apple was always ahead of time. ▼ Gerson W. Barbosa Posting Freak Posts: 2,761 Threads: 100 Joined: Jul 2005 11-07-2013, 06:31 PM My first computer was an Apple. Well, sort of: I'd like to switch to Apple, but unfortunately Apple hasn't bothered providing a Brazilian keyboard so far... Edited: 7 Nov 2013, 6:34 p.m. ▼ Jamil Junior Member Posts: 5 Threads: 0 Joined: Nov 2013 11-08-2013, 05:57 PM Mine was this complete with manual... Still with me. A very basic "basic"... ▼ Gerson W. Barbosa Posting Freak Posts: 2,761 Threads: 100 Joined: Jul 2005 11-09-2013, 07:51 AM Olá, Jamil! Do you remember this ad from 1983? The 16KB version cost about R\$ 1700, or US\$ 750 (today's dollars and reais). Edited: 9 Nov 2013, 7:54 a.m. ▼ Jamil Junior Member Posts: 5 Threads: 0 Joined: Nov 2013 11-09-2013, 05:16 PM Oi Gérson, I can´t remember this entire add but in the 80's I used to listen one radio program (in 93,7 MHz - USP-FM) and they played full "programs" that could be recorded (in cassete tapes)and loaded in TK series computers. I think it was in 1988, I downloaded that background image with "Humphrey Bogart" ( is he?) and impressionate all my family and friends... Great old times... Thanks for makes me remember this. Jamil BruceH Senior Member Posts: 275 Threads: 38 Joined: Jul 2007 11-07-2013, 07:39 PM Quote: Think different: It would be amazing if the calculator recognize if there a numbers or a variable. For example you have stored [1 2 3] in a and [4 5 6] in b then cross([a],[b]) expand it internally to cross([1 2 3],[4 5 6]) and calculate the result. In another case if i imput cross([7 8 9],[8 7 6]) the calculator recognize the numbers an calculate the result. As I said, it would be amazing. Yes. What if there were a way you could just pile some values up somewhere - numbers, or matrices, or variables containing matrices - whatever, and then run the cross command and have it just take off the pile exactly the right number of arguments that it needs and interpret them properly according to their type? That would be cool. cyrille de Brébisson Member Posts: 193 Threads: 10 Joined: Mar 2008 11-08-2013, 01:38 AM Hello, It would be amazing if as I just brought my fingers close to the calculator keyboard it would recognize that I am trying to type DOT([1,2,3],[4,5,6]), input it for me and gave me the result! Cyrille ▼ Han Senior Member Posts: 709 Threads: 104 Joined: Nov 2005 11-08-2013, 01:43 AM Quote: Hello, It would be amazing if as I just brought my fingers close to the calculator keyboard it would recognize that I am trying to type DOT([1,2,3],[4,5,6]), input it for me and gave me the result! Cyrille That's a lot of work -- moving fingers. I should just know what I am thinking and display the answer! Jokes aside, the calculator can only handle so much ambiguity and hence we have to resort to some basic, common means of input that would be appropriate for the largest audience size. ▼ Wes Loewer Junior Member Posts: 25 Threads: 1 Joined: Sep 2011 11-09-2013, 12:31 AM Quote: That's a lot of work -- moving fingers. I should just know what I am thinking and display the answer! Jokes aside, the calculator can only handle so much ambiguity and hence we have to resort to some basic, common means of input that would be appropriate for the largest audience size. You know it's just a matter of time till computers are embedded in the body. I can see it now... "Grandpa, is it true you used to have to push buttons with your fingers and read with your eyes? Wasn't that slower than our direct interface?" or "Come on Mom, I really need the 4-d graphing implant for math class. All the other kids have it but I only have the 3-d graphing implant." It's only a matter of time... -wes :-) Patrice Senior Member Posts: 274 Threads: 23 Joined: Sep 2007 11-08-2013, 01:49 AM Que la force soit avec toi :) May the force be with you Edited: 8 Nov 2013, 1:51 a.m.

 Possibly Related Threads... Thread Author Replies Views Last Post Prime Connectivity Kit Suggestion toml_12953 1 871 12-06-2013, 10:41 PM Last Post: Michael de Estrada HP Prime suggestion to avoid Numeric/Symbolic confusion Chris Pem10 4 1,116 11-19-2013, 05:49 AM Last Post: bluesun08 HP Prime - Revision Suggestion - Setting the Clock Bill Triplett 5 1,298 11-15-2013, 12:36 AM Last Post: Joe Horn HP Prime Emulator/Conn. kit suggestion Han 2 918 09-27-2013, 11:23 AM Last Post: Han Product Series and Limit Expressions on the 50G Matt Agajanian 13 2,266 09-03-2013, 02:02 PM Last Post: Simone Cerica WP-34s feature suggestion: "Follow jump" shortcut Andrew Nikitin 3 927 06-12-2013, 01:42 AM Last Post: Walter B [WP34S] A suggestion about C(x,y) Eduardo Duenez 15 2,574 01-28-2013, 04:50 AM Last Post: Walter B A new product of Spee Dee Sign d;-) Walter B 180 21,103 12-01-2012, 03:29 PM Last Post: Richard Ottosen (Denver, CO, USA) wp34s Emulator suggestion Damir 25 3,875 06-07-2012, 05:02 PM Last Post: Chris Tvergard 30b feedback on HP product review page bill platt 15 2,687 03-10-2012, 04:08 PM Last Post: Mark Scheuern

Forum Jump: