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Titlebook: Difference Equations from Differential Equations; Wilbert James Lick Book 1989 Springer-Verlag Berlin, Heidelberg 1989 Algebra.algorithm.a

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樓主: dabble
21#
發(fā)表于 2025-3-25 06:26:33 | 只看該作者
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發(fā)表于 2025-3-25 10:19:30 | 只看該作者
Célia M. Q. Ramos,Paulo M. M. Rodriguesl be functions of x, y, ?, ??/?x, and ??/?y. For b. ? 4ac > 0, the equation is hyperbolic and two families of real characteristics exist. As mentioned previously, characteristics are lines across which derivatives of the dependent variables may be discontinuous and along which infinitesimal disturbances may propagate.
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發(fā)表于 2025-3-25 15:01:52 | 只看該作者
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發(fā)表于 2025-3-25 15:58:03 | 只看該作者
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發(fā)表于 2025-3-25 22:21:52 | 只看該作者
Célia M. Q. Ramos,Paulo M. M. Rodriguesl be functions of x, y, ?, ??/?x, and ??/?y. For b. ? 4ac > 0, the equation is hyperbolic and two families of real characteristics exist. As mentioned previously, characteristics are lines across which derivatives of the dependent variables may be discontinuous and along which infinitesimal disturba
26#
發(fā)表于 2025-3-26 03:25:42 | 只看該作者
27#
發(fā)表于 2025-3-26 06:35:24 | 只看該作者
Book 2023acy, as well as the related areas of cyberdiplomacy and techplomacy. It focuses on how interregional collaboration could strengthen societal resilience in both LAC and EU member countries and contribute to realising the SDGs and Agenda 2030 objectives. The book explores the history of EU relations w
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發(fā)表于 2025-3-26 11:02:25 | 只看該作者
29#
發(fā)表于 2025-3-26 15:55:25 | 只看該作者
Thomas Zwackvoted to the output networks of high-efficiency power ampifiers. The novel type of photonic band-gap structure providing improved characteristics both in the pass and stop bands is proposed. Finally, the fifth-harmonic peaking class F power amplifier design based on the above structure is presented. .
30#
發(fā)表于 2025-3-26 18:13:23 | 只看該作者
Ehen als Randthema der Familienforschungurzer und dadurch auch unbedeutender Vorlauf zu einer als dem ?eigentlichen Zweck“ oder ?eigentlichen Motiv“ aufgefassten Familienbildung angesehen. Dieser Verweisungszusammenhang war noch in den soziologischen Ehedefinitionen aus den 1980er Jahren ein g?ngiges Element:
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