Problem with zeros, solve in CAS.

01012014, 10:59 PM
Post: #1




Problem with zeros, solve in CAS.
When on HP Prime in CAS finding zeros or solving with solve for example x^2100 I get only one solution 10 but it should be [10,10] or {10,10} or maybe I have to change something i setting. In Home view it seams to work OK.
Happy New Year 2014. Thanks. 

01022014, 02:15 AM
Post: #2




RE: Problem with zeros, solve in CAS.
(01012014 10:59 PM)John P Wrote: When on HP Prime in CAS finding zeros or solving with solve for example x^2100 I get only one solution 10 but it should be [10,10] or {10,10} or maybe I have to change something i setting. In Home view it seams to work OK. Please provide more details, such as the exact syntax you are using and your CAS settings. I don't have any problem getting the correct result on my Prime. 

01022014, 04:07 AM
Post: #3




RE: Problem with zeros, solve in CAS.
(01022014 02:15 AM)Michael de Estrada Wrote:(01012014 10:59 PM)John P Wrote: When on HP Prime in CAS finding zeros or solving with solve for example x^2100 I get only one solution 10 but it should be [10,10] or {10,10} or maybe I have to change something i setting. In Home view it seams to work OK. Here is the syntax: solve(x^2100=0,x) > {10} zeros(x^2100,x) > [10] P.S. In the latest emulator I do not have this problem solve and zeroes return {10,10}, [10,10]. Settings in CAS: Angle Measure: Radians Number Format: Standard, 4 Integers: Decimal Simplify: Minimum Exact: v Use v: v Principal: v Recursive Eval. 5 Rec. Repl. 1 Rec. Fn. 9 Epsilon: .000000000001 Prob. 1E15 Newton 40 

01022014, 04:36 AM
Post: #4




RE: Problem with zeros, solve in CAS.
I don't see anything wrong, and my Prime gives the correct answer with your syntax. You didn't show your CAS settings for Complex, Use i and Increasing, however, those shouldn't affect your results.
Do you have the latest firmware (2013 11 25 (5447)) on your Prime ? Have you tried a hard reset using the pinhole at the rear of the calculator ? 

01022014, 05:16 AM
Post: #5




RE: Problem with zeros, solve in CAS.
(01022014 04:36 AM)Michael de Estrada Wrote: I don't see anything wrong, and my Prime gives the correct answer with your syntax. You didn't show your CAS settings for Complex, Use i and Increasing, however, those shouldn't affect your results. Yes, I do have the latest firmware. I was looking how to flash the memory and put the latest firmware again and accidentally I fixed the problem by pressing together the: On+Apps+Esc for very short time and releasing them together. It seams to be working OK for now and I hope it stays like that. Thanks Michael. 

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