Solving inequalities
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11-21-2022, 03:33 PM
(This post was last modified: 11-22-2022 05:12 PM by Albert Chan.)
Post: #5
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RE: Solving inequalities
(11-16-2022 10:45 AM)ftneek Wrote: The command I entered on Xcas is Solver probably added some random elements to guess, thus getting different results. Negative solution is tougher, since f(x) = negative ^ negative = complex On XCas 1.5.0-63 (win32) (old version), I get different results, with repeated solve. [((x>1358.2242733) and (x<4.84957600044e+12))] [((x>1358.22427348) and (x<4.15614031773e+12))] [x>1358.22427318] [x>1358.22427339] [x<-1360.05760617,x>1358.22427263] I get the correct result on the fifth tries. The problem is ... we don't know which one to pick. On XCas 1.9.0-22 (win32) (new version), it crashes every time. On HP emulator Build 2.1.14181 (2018 10 16) (very old), surprisingly, I get good answer for every solve. I had never bother to upgrade {x<−1360.05760747,x>1358.22428117} {x<−1360.05761507,x>1358.22429144} {x<−1360.05760716,x>1358.22430358} {x<−1360.05761158,x>1358.22427617} {x<−1360.05761261,x>1358.22429356} Update Nov 22, 2022: I tried XCas 1.9.0 again. This time no crash, given similar result to XCas 1.5.0 |
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Messages In This Thread |
Solving inequalities - ftneek - 11-16-2022, 10:45 AM
RE: Solving inequalities - parisse - 11-16-2022, 07:25 PM
RE: Solving inequalities - ftneek - 11-19-2022, 01:24 AM
RE: Solving inequalities - parisse - 11-20-2022, 06:57 PM
RE: Solving inequalities - Albert Chan - 11-21-2022 03:33 PM
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