Tidious
发表于 2025-3-25 05:10:47
http://reply.papertrans.cn/75/7415/741473/741473_21.png
神秘
发表于 2025-3-25 08:48:09
Power Series Methods, has an enormous variety of technique and phenomena within its confines. This section describes the simplest nontrivial partial differential equation.The equation is of first order, is linear with constant coefficients, and involves derivatives with respect to both variables. The unknown is a possib
政府
发表于 2025-3-25 15:28:57
http://reply.papertrans.cn/75/7415/741473/741473_23.png
Repetitions
发表于 2025-3-25 16:34:36
Solution of Initial Value Problems by Fourier Synthesis,nstant coefficient equations have explicit exponential solutions. Both the power series method and the Fourier analysis method have as point of departure explicit exact solutions. This is a severe limitation. Some more recent developments, for example, pseudodifferential and Fourier integral operato
遭受
发表于 2025-3-25 22:18:22
http://reply.papertrans.cn/75/7415/741473/741473_25.png
积云
发表于 2025-3-26 01:52:35
http://reply.papertrans.cn/75/7415/741473/741473_26.png
Mortal
发表于 2025-3-26 06:52:25
http://reply.papertrans.cn/75/7415/741473/741473_27.png
Spinous-Process
发表于 2025-3-26 09:56:04
http://reply.papertrans.cn/75/7415/741473/741473_28.png
verdict
发表于 2025-3-26 16:31:08
http://reply.papertrans.cn/75/7415/741473/741473_29.png
植物茂盛
发表于 2025-3-26 20:51:56
http://reply.papertrans.cn/75/7415/741473/741473_30.png