Can this be solved with any HP CAS?
09-30-2017, 08:50 AM
Post: #24
 Csaba Tizedes Senior Member Posts: 414 Joined: May 2014
RE: Can this be solved with any HP CAS?
(09-29-2017 10:32 PM)lrdheat Wrote:  What was the context, the reason for the 1/(x-5) term in the problem?

You're right, this is equivalent 3×X=15 and X!=5 problem.
This is an example from a hungarian middle school mathematics book.
The reason of the term 1/(X-5) to check the student can to reduce the set of the real numbers (5 is not belongs to $$\Bbb R$$ )

I just use it to test CAS systems - and all of them fails.

I really do not understand why do you do not see, this is a really big problem. How you can trust a system, if that system cannot solve this simple, midschool straigh example.

Csaba
 « Next Oldest | Next Newest »

 Messages In This Thread Can this be solved with any HP CAS? - HP67 - 09-27-2017, 03:55 PM RE: Can this be solved with any HP CAS? - Nigel (UK) - 09-27-2017, 04:25 PM RE: Can this be solved with any HP CAS? - AlexFekken - 09-28-2017, 03:18 AM RE: Can this be solved with any HP CAS? - HP67 - 09-27-2017, 04:58 PM RE: Can this be solved with any HP CAS? - Arno K - 09-27-2017, 06:01 PM RE: Can this be solved with any HP CAS? - HP67 - 09-27-2017, 06:05 PM RE: Can this be solved with any HP CAS? - Csaba Tizedes - 09-27-2017, 07:37 PM RE: Can this be solved with any HP CAS? - Gilles59 - 09-27-2017, 08:56 PM RE: Can this be solved with any HP CAS? - Csaba Tizedes - 09-28-2017, 07:43 PM RE: Can this be solved with any HP CAS? - Gilles59 - 09-30-2017, 01:04 PM RE: Can this be solved with any HP CAS? - Csaba Tizedes - 09-30-2017, 07:16 PM RE: Can this be solved with any HP CAS? - Gilles59 - 09-30-2017, 10:18 PM RE: Can this be solved with any HP CAS? - SlideRule - 09-29-2017, 02:26 AM RE: Can this be solved with any HP CAS? - Csaba Tizedes - 09-29-2017, 05:57 PM RE: Can this be solved with any HP CAS? - SlideRule - 09-29-2017, 06:44 PM RE: Can this be solved with any HP CAS? - Nigel (UK) - 09-30-2017, 09:10 AM RE: Can this be solved with any HP CAS? - SlideRule - 09-30-2017, 12:35 PM RE: Can this be solved with any HP CAS? - Arno K - 09-27-2017, 07:50 PM RE: Can this be solved with any HP CAS? - Eric Rechlin - 09-27-2017, 08:23 PM RE: Can this be solved with any HP CAS? - Paul Dale - 09-27-2017, 10:01 PM RE: Can this be solved with any HP CAS? - BarryMead - 09-28-2017, 12:24 AM RE: Can this be solved with any HP CAS? - Paul Dale - 09-28-2017, 01:50 AM RE: Can this be solved with any HP CAS? - BarryMead - 09-29-2017, 12:08 AM RE: Can this be solved with any HP CAS? - rprosperi - 09-28-2017, 09:05 PM RE: Can this be solved with any HP CAS? - AlexFekken - 09-28-2017, 10:09 PM RE: Can this be solved with any HP CAS? - rprosperi - 09-29-2017, 12:00 AM RE: Can this be solved with any HP CAS? - AlexFekken - 09-29-2017, 12:46 AM RE: Can this be solved with any HP CAS? - lrdheat - 09-29-2017, 10:32 PM RE: Can this be solved with any HP CAS? - Csaba Tizedes - 09-30-2017 08:50 AM RE: Can this be solved with any HP CAS? - SlideRule - 10-01-2017, 03:59 PM

User(s) browsing this thread: 1 Guest(s)