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 Solve example on various calculators
12-09-2023, 02:38 AM
Post: #1
 lrdheat Senior Member Posts: 866 Joined: Feb 2014
Solve example on various calculators
(X+1)*sqrt(X^2 -2*X -1) =0 on HP 35S, the roots at -1, ~-.41 are found. The root at ~2.41 produces a negative square root error. A similar experience on the TI-30X Pro…the ~2.41 root produces a no sign change error. The CASIO 991CW finds the ~2.41 root with ease, but the guess for the root at ~-.41 has to be correct to about 6 significant digits to find the root. The CASIO 9750giii has the same problem in the equation app, but finds the -1 and ~-.41 roots in calculate mode using SolveN and the Solve for a range of 2 to 3 finds the ~2.41 root ( a range encompassing the full range of roots only finds the ~2.41 root). Wonder how the methodologies differ amongst the calculators.
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 Messages In This Thread Solve example on various calculators - lrdheat - 12-09-2023 02:38 AM RE: Solve example on various calculators - Albert Chan - 12-09-2023, 01:19 PM RE: Solve example on various calculators - lrdheat - 12-09-2023, 03:04 PM RE: Solve example on various calculators - C.Ret - 12-09-2023, 06:19 PM RE: Solve example on various calculators - lrdheat - 12-09-2023, 07:24 PM RE: Solve example on various calculators - Marco Polo - 12-09-2023, 10:08 PM RE: Solve example on various calculators - C.Ret - 12-10-2023, 03:19 AM RE: Solve example on various calculators - Gene222 - 12-12-2023, 04:21 PM RE: Solve example on various calculators - lrdheat - 12-10-2023, 04:32 AM RE: Solve example on various calculators - carey - 12-10-2023, 09:27 AM RE: Solve example on various calculators - Albert Chan - 12-10-2023, 04:05 PM RE: Solve example on various calculators - lrdheat - 12-10-2023, 02:28 PM

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