Different solution with MathCAD - why?

Different solution with MathCAD - why? - definite integral - Messaggi

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#1 Pubblicato: 07/03/2019 05:20:13

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Hi
I have tried to calculate this elliptic Integral with MathCAD v15 and SMath.
But I get a Different solution with MathCAD - why? Thanks for help.

WaLTER

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#2 Pubblicato: 07/03/2019 05:54:20

Davide Carpi

1.443 apprezzamenti in 2.936 post.

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Hello Walter,

results are different because you are making another calculation:

numerator of the mathcad function is l (lowercase L) while in SMath is 1 (one);
upper bound of the integral is e (Euler's number) in mathcad, while is 0.5 in SMath;

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#3 Pubblicato: 07/03/2019 06:02:35

wschrabi

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Gruppo: User

Thanks - I really did not see this.

#4 Pubblicato: 07/03/2019 06:29:45

NDTM Amarasekera

130 apprezzamenti in 352 post.

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Look within!... The secret is inside you. Best Regards Eng. NDTM Amarasekera - Sri Lanka

#5 Pubblicato: 07/03/2019 11:12:47

Jean Giraud

983 apprezzamenti in 6.866 post.

Gruppo: User

Wrote
Thanks for help.

Always plot the integrand to avoid disaster.
Simpson integrator ranges from exact to absolute scrap.
In doubt, sanity vs Mathcad 11 adaptive.
In your example: watch the low limit.
Alternately, sanity Wolfram Integrator

Jean

Eliptic (1).sm (27,6 KiB) scaricato 1223 volta(e).

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Different solution with MathCAD - why? - definite integral - Messaggi