HP Prime 'where' function « Next Oldest | Next Newest »

 ▼ bluesun08 Member Posts: 207 Threads: 48 Joined: Feb 2010 10-29-2013, 06:19 AM Is there a 'where' function key ( | ) in HP Prime, so that i can do for example: f(x):=k*x^2 f(3) | k=4 ▼ Walter B Posting Freak Posts: 4,587 Threads: 105 Joined: Jul 2005 10-29-2013, 06:41 AM ?? IMHO, 4*3^2 = 36. d:-? ▼ bluesun08 Member Posts: 207 Threads: 48 Joined: Feb 2010 10-29-2013, 06:47 AM Thank you joker, but as i write this was only an EXAMPLE. ▼ Walter B Posting Freak Posts: 4,587 Threads: 105 Joined: Jul 2005 10-29-2013, 06:59 AM Without a Prime, I'd simply define that function being f(x, k) and calculate f(3, 4). What's wrong with that approach? d:-? From Hong Kong Member Posts: 125 Threads: 5 Joined: Jun 2008 10-29-2013, 06:47 AM Choose the 3rd template in the top row after pressing the template button. Edited: 29 Oct 2013, 6:49 a.m. ▼ bluesun08 Member Posts: 207 Threads: 48 Joined: Feb 2010 10-29-2013, 06:50 AM Is there also a solution without the template? (like in HP 50g RS TOOL) ▼ From Hong Kong Member Posts: 125 Threads: 5 Joined: Jun 2008 10-29-2013, 06:57 AM As far as I know, no! ▼ bluesun08 Member Posts: 207 Threads: 48 Joined: Feb 2010 10-29-2013, 06:59 AM What a pity! ▼ Joe Horn Member Posts: 153 Threads: 7 Joined: Jun 2008 10-29-2013, 07:17 AM Quote:What a pity! It's a pity that "|" requires TWO keystrokes (or, to be precise, one keystroke and one tap)? The only way to reduce that would be to put it on a primary key, losing whatever is on that key now. Steve Keeley Junior Member Posts: 21 Threads: 1 Joined: Feb 2009 10-29-2013, 11:24 AM Try the substitute command (on the CAS/Algebra menu): subst(f(3), k=4) ▼ bluesun08 Member Posts: 207 Threads: 48 Joined: Feb 2010 10-29-2013, 05:18 PM An ideal place for the "|"-sign would be SHIFT 6. ▼ Joe Horn Member Posts: 153 Threads: 7 Joined: Jun 2008 10-29-2013, 06:56 PM Quote:An ideal place for the "|"-sign would be SHIFT 6. That would require three strokes (shift, 6, |). Its current location only requires two (template, |). Hey, I just noticed that both the 50g and Prime require exactly the same finger travel to press "|". On the 50g, the distance between the right-shift key and the TOOL key is 3 inches (7.5 cm), and on the Prime, the distance between the template key and the "|" on the screen is exactly the same. Same number of presses, and same finger travel. Hmmm.

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