Can this be solved with any HP CAS?

09302017, 08:50 AM
Post: #24




RE: Can this be solved with any HP CAS?
(09292017 10:32 PM)lrdheat Wrote: What was the context, the reason for the 1/(x5) 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/(X5) 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 

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