Wrong integration

12212021, 04:57 PM
Post: #1




Wrong integration
Hi, I have a new Prime G2 with the latest 2021.12.02 firmware.
But it can't handle with integral int(sin(x^20),x,20,20) in nonCAS mode. What is wrong? The CAS shows the correct result, the same integral calculated correctly from 10 to 10. Also, the Windows emulator works well. Does HP Prime have any settings for integration? 

12222021, 04:12 AM
Post: #2




RE: Wrong integration
I have the same calculator/firmware and I'm getting the correct answer in both CAS and Home. I tried various settings but could not reproduce your result.


12222021, 05:17 AM
Post: #3




RE: Wrong integration
Seems I found the issue.
I see the CAS setiings, and epsilon were 1e100. I changed to 0.000000000001 as the Windows emulator has. And finally, it works. 

12222021, 08:18 AM
Post: #4




RE: Wrong integration
I have some more notes that integration results really depend on epsilon value.
Even default 0.000000000001 is not sufficient for some equations, need to reduce. 

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