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I've been using SMath (0.89) for about a year now and never experience this. Its why I alway put the result next to the equation to be sure I'm getting a reasonable result. The value of Wdsw is 10^31 when it should have been only 757. If I set optimization as Numeric I get the correct result. More reason to keep a check on running results. If I hadn't who knows what the final result would be.   |
Ed |
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  Rank: Administration Groups: Registered, Advanced Member Joined: 23/06/2009(UTC) Posts: 1,740  Was thanked: 318 time(s) in 268 post(s)
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Hello Ed, This is one more example among others where the "Symbolic" optimization had problems with. I tried to reproduce it and the value of W.dsw is somewhat different than in your case. Open in SMath CloudHere - "None" or "Numeric" will give the correct numerical value. Someone on this Forum suggested having the option to set "None" or "Numeric" as default instead of "Symbolic". optimization. I suppose that this might be one of the possibility, until the fixing of this problem. Regards, Radovan |
When Sisyphus climbed to the top of a hill, they said: "Wrong boulder!" |
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atan(0.5) = 1.5359 according to SMath Studio... I beg to differ angle units set to degrees using version 0.89 (build 3856) 
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Rank: Administration Groups: Registered, Advanced Member Joined: 23/06/2009(UTC) Posts: 1,740 Was thanked: 318 time(s) in 268 post(s)
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Hello, This was a known issue and corrected in 0.89.9. There is no "Angle units" option anymore radians - no units or unit "rad" degrees - units "deg" or "°" Open in SMath CloudStrange?? Live version gives wrong result here. The 0.89.8 version gives the correct result atan(0.5)=26.5651@'degRegards, Radovan EDIT: I messed up with "grad" and "deg", sorry  Edited by user 18 May 2011 15:36:04(UTC)
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When Sisyphus climbed to the top of a hill, they said: "Wrong boulder!" |
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Hello Radovan,
I think, SMath live calculates correct.
But the result unit is grad, not degree (400grad = 400gon = 360degree).
Best Regards,
Peter
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Rank: Administration Groups: Registered, Advanced Member Joined: 23/06/2009(UTC) Posts: 1,740 Was thanked: 318 time(s) in 268 post(s)
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Peter wrote:...But the result unit is grad, not degree (400grad = 400gon = 360degree). Thank you Peter, you are right. Sorry, my mistake - I messed up "grad" and "deg" Regards, Radovan |
When Sisyphus climbed to the top of a hill, they said: "Wrong boulder!" |
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Rank: Member Groups: Registered
Joined: 04/10/2010(UTC)
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Location: Hörselgau, Germany
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Hello Radovan,
in my opinion the unit 1grad = 1gon in SMath leads to mistakes, because grad is
normally used as alternative for deg.
To avoid confusion and mistakes I recommend to delete the unit grad from the unit-list in SMath or redefine it.
Btw., in MathCad: 1Grad = 1deg
Best Regards,
Peter
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 1 user thanked Peter for this useful post.
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