NDSolve question
- To: mathgroup@smc.vnet.net
- Subject: [mg11119] NDSolve question
- From: Spooky <SLKBC@cc.usu.edu>
- Date: Mon, 23 Feb 1998 21:40:41 -0500
- Organization: Utah State University
Hi, I trying to slove a differential equation of the following form: F''' + F'F + (F'')^2 = 0 I have boundry conditions: F(0) = F'(0) = 0 F'(infinity) = 1 My quesitons are two: How can I convert my boundry condition at infinity to a boundry condition a 0 (for F'') and I need to see all the derivatives, i.e. F'(x), F''(x), F'''(x) and F(x). When Mathematica solves a differential equation, how does it give the answer, is it an object, equation, array of numbers, etc. If it is an array of numbers, does it also return the lower order derivatives? I am using mathematica version 3.0. Another problem I am having is that when I mage grammar mistakes, I get an error message which is good, but after fixing the error, I get a whole new set of invalid error messages, the reason I think they are invalid is that I can exit Mathematica and re-enter and my program will run perfectly. Are there some error flags I need to reset or should my system just re-evaluate the expression and send me on my way? Any help on any of these problems would be greatly appreciated. Shayne C. Rich SLKBC@cc.usu.edu