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Problem with complex number (SMath v0.89)
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Joined: 02/03/2011(UTC)
Posts: 1
Location: czech
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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,
You can see the symbolic representation of your matrix elements:
el(a,1,2)—{2500+i*π}/{i*π}el(a,1,2)—{2500+i*π}/{i*π}
They are the same. Now, get their product and see the symbolical result:
m←el(a,1,2)*el(a,2,1)
m—{(2500+i*π)^2}/{π^2}
and the numerical value would be:
m=6.3326*10^5+1591.5494*i
Change the Optimization of calculating "m" Into Optimization|None or Optimization|Numeric and see the numerical value. The numerical result will be:
m=-6.3326*10^5-1591.5494*i
I do not get it? Could anyone explain this?
Regards,
Radovan |
When Sisyphus climbed to the top of a hill, they said: "Wrong boulder!" |
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  Rank: Advanced Member Groups: Registered
Joined: 04/07/2010(UTC) Posts: 178  Was thanked: 19 time(s) in 13 post(s)
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Pecular, I tried to duplicate the equations in the original post and no matter what I do I get the same and correct results. I'm using SMath 0.89 Win7.  However, when I duplicate the equations from the attached zip file I do get incorrect results but I noted that the (i*pi)^2 in the denominator does not calculate correctly. The result is 1/pi^2. It should be -1/pi^2. Something happened to the i^2 in the denominator. When I change optimization to Numeric in the last set of equations, then I get the correct result.  Just by looking at the results without optimization changed, you'ld have a hard time finding this discrepency. |
Ed |
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Problem with complex number (SMath v0.89)
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