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 jas0nuk #1 Posted : 15 March 2009 03:03:14(UTC) Rank: MemberGroups: Registered Joined: 15/03/2009(UTC)Posts: 12Location: UK HiThank you for an excellent piece of software. Definitely the best Windows Mobile calculator I have found.However I think I have found a slight issue with imaginary numbers(-1)^(1/2) should give the answer as iHowever it seems to add a small real number to the answer, givingCode:``(-1)^(1/2) = 6.123*10^{-17} + i`` Additionally, squaring i gives Code:`` i^2 = -1 + 1.2246*10^{-16}*i`` which should be -1Code:``2*i^2=-4+4.8984*10^{-16}*i`` should be -4, etc.Regards
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 Andrey Ivashov #2 Posted : 16 March 2009 04:23:52(UTC) Rank: AdministrationGroups: Developers, Registered, Knovel Developers, Administrators, Advanced MemberJoined: 11/07/2008(UTC)Posts: 1,603Was thanked: 1972 time(s) in 661 post(s) This is not an issue. This is normal calculation errors of numeric methods. Please, take a look to the picture below:This hapens because Mathcad, by default, shows all numbers, that less than 10^(-15) as 0. But SMath Studio doesn't do so - that's why you can see proper results in the similar examples... and that's why your finding is not an issue...
 jas0nuk #3 Posted : 16 March 2009 05:03:46(UTC) Rank: MemberGroups: Registered Joined: 15/03/2009(UTC)Posts: 12Location: UK So, it's a by-product of calculating imaginary numbers numerically.Thanks for the explanation.
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