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Double Integration using ode solvers - Сообщения
#1 Опубликовано: 04.06.2020 01:40:08
Hi. This worksheet shows how to use an ode solver for evaluating a double integral over the region between two functions.
DoubleIntegralRK.sm (42 КиБ) скачан 184 раз(а).
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Best regards.
Alvaro.
DoubleIntegralRK.sm (42 КиБ) скачан 184 раз(а).
DoubleIntegralRK.pdf (219 КиБ) скачан 201 раз(а).
Best regards.
Alvaro.
#2 Опубликовано: 07.06.2020 13:21:46
Thanks Alvaro for your example.
Can the change of variable be put in the procedure definition?
Can the change of variable be put in the procedure definition?
Physics is like sex. Sure, it may give some practical results, but that’s not why we do it. (R. Feynman)
#3 Опубликовано: 07.06.2020 19:50:25
WroteCan the change of variable be put in the procedure definition,?
Like this: yes, just opposite plot.
Double Switch [x, L].sm (6 КиБ) скачан 130 раз(а).
#4 Опубликовано: 17.06.2020 20:21:22
Hi. This is the double integral using Gauss Legendre quadrature.
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GaussLegendreQuadrature.pdf (160 КиБ) скачан 164 раз(а).
Best regards.
Alvaro.
Yes.
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GaussLegendreQuadrature.sm (60 КиБ) скачан 147 раз(а).
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Best regards.
Alvaro.
Wrote...
Can the change of variable be put in the procedure definition?
Yes.
DoubleIntegralSteelCat.sm (47 КиБ) скачан 151 раз(а).
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#5 Опубликовано: 18.06.2020 11:26:19
Keisan has longer Legendre than 64, but couldn't copy/paste ?
From other source: 63, 64.
Integrate Legendre [ Wr 24 ].sm (28 КиБ) скачан 142 раз(а).
From other source: 63, 64.
Integrate Legendre [ Wr 24 ].sm (28 КиБ) скачан 142 раз(а).
#6 Опубликовано: 18.06.2020 21:35:42
WroteKeisan has longer Legendre than 64, but couldn't copy/paste ?
From other source: 63, 64.
Integrate Legendre [ Wr 24 ].sm (28 КиБ) скачан 142 раз(а).
Hi Jean. Yes, can copy and paste. Do that first into excel, and from there to the small SMathMatrixEditor and finally paste in SMath.
In the attached Laguerre and Legendre coeffs for the Gauss method.
DoubleIntegralJean.sm (25 КиБ) скачан 152 раз(а).
DoubleIntegralJean.pdf (45 КиБ) скачан 152 раз(а).
Best regards.
Alvaro
#7 Опубликовано: 20.06.2020 07:39:28
WroteHi Jean. Yes, can copy and paste.
Thanks, Amigo !
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