Error of a function with Summation

Error of a function with Summation - The output of a function with summation has error - Messaggi

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#1 Pubblicato: 17/05/2016 15:15:15

1 apprezzamenti in 22 post.

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Hi!

I'm a novice for SMath.
I'm porting a Mathcad 15 file to SMath.
I found that the SMath function with Summation has some error.
There are difference between the output of direct calculation and function output.(See attached pictures)

Please, check it and help me.

Best regards,

Novice
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#2 Pubblicato: 17/05/2016 16:34:32

Ernesto

13 apprezzamenti in 74 post.

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Looks like a bug. If you right click DD(0), and change the optimization to symbolic, it gives the right answer.

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MSL 18/05/2016 01:32:00

#3 Pubblicato: 17/05/2016 23:45:38

Jean Giraud

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Define as a function of an argument and use eval(,)

#4 Pubblicato: 18/05/2016 01:32:05

MSL

1 apprezzamenti in 22 post.

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Wrote
Looks like a bug. If you right click DD(0), and change the optimization to symbolic, it gives the right answer.

Thank you!
Whenever I got'the error message, "Result is above max. allowed positive number", I'll try to change the option.

#5 Pubblicato: 18/05/2016 01:52:56

MSL

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Wrote
Define as a function of an argument and use eval(,)

Thank you Jean, it is great hint for me.
I've tried to use 'eval' function for the output of summation function as like you.
But I got another results.(See attached sample file)
Would you mind check and help me?
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#6 Pubblicato: 18/05/2016 11:56:47

Jean Giraud

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You forgot to index λ