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Different solution with MathCAD - why? - definite integral - Сообщения
#1 Опубликовано: 07.03.2019 05:20:13
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
Eliptic.sm (17 КиБ) скачан 50 раз(а).
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
Eliptic.sm (17 КиБ) скачан 50 раз(а).
#2 Опубликовано: 07.03.2019 05:54:20
Hello Walter,
results are different because you are making another calculation:
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 Опубликовано: 07.03.2019 06:02:35
Thanks - I really did not see this.

#4 Опубликовано: 07.03.2019 06:29:45
#5 Опубликовано: 07.03.2019 11:12:47
WroteThanks 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 КиБ) скачан 39 раз(а).
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