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Offline uni  
#41 Posted : 24 December 2018 13:47:08(UTC)
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Updated.



alglib.ode.kinetic1.sm (8kb) downloaded 55 time(s).
alglib.ode.kinetic2.sm (11kb) downloaded 43 time(s).
alglib.ode.kinetic3.sm (11kb) downloaded 49 time(s).
alglib.ode.test1.sm (11kb) downloaded 47 time(s).
alglib.ode.test2.sm (11kb) downloaded 43 time(s).
alglib.ode.Amplitude detector.sm (20kb) downloaded 51 time(s).

alglib.ode.kinetic1.pdf (76kb) downloaded 37 time(s).
alglib.ode.kinetic2.pdf (90kb) downloaded 29 time(s).
alglib.ode.kinetic3.pdf (84kb) downloaded 35 time(s).
alglib.ode.test1.pdf (86kb) downloaded 34 time(s).
alglib.ode.test2.pdf (90kb) downloaded 31 time(s).
alglib.ode.Amplitude detector.pdf (148kb) downloaded 33 time(s).

Edited by user 25 December 2018 20:24:43(UTC)  | Reason: Not specified

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Offline uni  
#42 Posted : 28 December 2018 20:02:54(UTC)
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Updated. Refactored.

2018-12-28_22-01-34.png
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Offline uni  
#43 Posted : 19 January 2019 22:31:14(UTC)
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Updated. al_nleqsolve(2), al_nleqsolve(3), al_nleqsolve(4) added.

2019-01-20_03-48-22.png 2019-01-20_00-30-21.png 2019-01-20_00-30-04.png

Edited by user 20 January 2019 01:54:35(UTC)  | Reason: Not specified

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Offline uni  
#44 Posted : 27 January 2019 11:23:49(UTC)
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With numeric optimization (for all functions) it works much faster.

Fourier series coefficients.sm (18kb) downloaded 39 time(s).
Fourier series coefficients.pdf (139kb) downloaded 33 time(s).

2019-01-27_13-21-34.png

Edited by user 27 January 2019 16:42:03(UTC)  | Reason: Not specified

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Offline uni  
#45 Posted : 27 January 2019 16:59:21(UTC)
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Example 2.

Fourier series coefficients.sm (29kb) downloaded 69 time(s).
Fourier series coefficients.pdf (171kb) downloaded 52 time(s).

2019-01-27_18-56-56.png
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Offline Jean Giraud  
#46 Posted : 27 January 2019 18:48:06(UTC)
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Otherwise w/o Algib and more Engineering applications

Fourier Budapest39 Smoothing.sm (48kb) downloaded 38 time(s).
Offline Jean Giraud  
#47 Posted : 27 January 2019 19:06:32(UTC)
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Fourier-Fejer-Lanczos interesting too.
IrfanView "ResizeResample" zoom up/down in two options
Fourier or Lanczos the best.

Fourier Fejer Lanczos.sm (10kb) downloaded 38 time(s).
Offline Ber7  
#48 Posted : 18 February 2019 11:42:17(UTC)
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Parameterization of implicit functions with al_nleqsolve

Parametrisation.sm (30kb) downloaded 42 time(s).
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Offline Razonar  
#49 Posted : 18 February 2019 19:59:33(UTC)
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Hi Ber. Nice technique, easy to implement. You can also make that as a function, and monocolor too.

Parametrisation.sm (26kb) downloaded 42 time(s).

Another option could be use y0 as vector, and solve for each element in y0, obtaining res, res1, ..., resn

Best regards.
Alvaro.
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Offline Jean Giraud  
#50 Posted : 19 February 2019 05:53:03(UTC)
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1. SS 6179 does not complain
2. Takes ~ 1 hr to terminate the first function
3. NO plot result [NO complain but NO plot ?]
4. Would be interesting checking if the attached SS 6179
runs in your actual AlgLib 3.1x. If NOT => would be a dramatic bug.
It would indicate that all maths based al_nleqsolve would be scrap.

Contour SOLVE [Electron Solve algo Express].sm (21kb) downloaded 47 time(s).
Offline uni  
#51 Posted : 22 November 2020 10:47:54(UTC)
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Updated.

Changes:

- source code updated to ALGLIB 3.16.0;
- refactored.

Edited by user 22 November 2020 11:21:45(UTC)  | Reason: Not specified

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Offline uni  
#52 Posted : 22 February 2021 22:06:56(UTC)
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Was thanked: 977 time(s) in 560 post(s)
Updated.

Changes:

- source code updated to ALGLIB 3.17.0;
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