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Mar
30
awarded  Nice Answer
Mar
30
revised NDSolve in Mathematica won't use all the cores avaiable
added 2 characters in body
Mar
30
revised NDSolve in Mathematica won't use all the cores avaiable
added 208 characters in body
Mar
30
answered NDSolve in Mathematica won't use all the cores avaiable
Mar
29
comment 4th-order Runge-Kutta method to solve a system of coupled ODEs
@Prasanta NDSolve does stop at 0.9576, but have you noticed that it begins from 1 because your initial condition is given at η = 1? BTW, what's your first language?
Mar
29
comment 4th-order Runge-Kutta method to solve a system of coupled ODEs
@Prasanta Since I'm the author of this post, you don't need to add "@xzczd" to remind me. In my view the most vital part of your problem is, you haven't even find a way to solve your nonlinear ODE. It's easy to create nonlinear ODE, but solving it can be really hard. I suggest you to first make sure if your equations are correct (incorrect translation for the real problem isn't rare!), and consider carefully if you really need your equations to be so complicated. Simplify your model if possible. Diving into the hell of looking for proper combination of options of NDSolve is the last choice.
Mar
28
comment 4th-order Runge-Kutta method to solve a system of coupled ODEs
If RunnyKine doesn't appear in the comment under this question, then the "@" won't work. And why are you still adding whitespace between "@" and the name?
Mar
28
answered 4th-order Runge-Kutta method to solve a system of coupled ODEs
Mar
28
revised 4th-order Runge-Kutta method to solve a system of coupled ODEs
deleted 596 characters in body; edited title
Mar
28
comment 4th-order Runge-Kutta method to solve a system of coupled ODEs
(Sigh…) Just found your code in the edit history. This time I've done the edit for you, please check what I've done carefully.
Mar
28
revised 4th-order Runge-Kutta method to solve a system of coupled ODEs
deleted 596 characters in body; edited title
Mar
28
comment 4th-order Runge-Kutta method to solve a system of coupled ODEs
After pasting your code here, select them and press Ctrl+K, or add four whitespaces before each line of code. Things like \[Eta] isn't unreadable for Mathematica user, when pasting back to the notebook, it'll get back to the normal greek letters, and if you want to make your code look better in this site (of course it's encouraged), use the link I gave above to convert those "unreadable" symbol to greek letters!
Mar
28
reviewed Close Integrated Solution Graphics
Mar
28
comment 4th-order Runge-Kutta method to solve a system of coupled ODEs
Just copy and paste (Ctrl+C and Ctrl+V under Windows), as you copy and paste any thing. BTW, if you add a white space before "@" and "xzczd", the reminder won't work. It should be "@xzczd".
Mar
28
comment 4th-order Runge-Kutta method to solve a system of coupled ODEs
Select your code and press Ctrl+Shift+I before copying. And you can also use this to convert your code to make it look better.
Mar
26
revised How to modify a PDE inside NDSolve according to an if condition
deleted 10 characters in body
Mar
26
answered How to modify a PDE inside NDSolve according to an if condition
Mar
26
comment How to modify a PDE inside NDSolve according to an if condition
Well, I still suggest you to add the missing b.c.s, though NDSolve gives an answer currently, it's not that clear what boundary is added.
Mar
26
comment Delete duplicates by a criterion
And your syntax for DeleteDuplicates is even incorrect.
Mar
26
comment How to modify a PDE inside NDSolve according to an if condition
Is the function f[t, y, x] or f[t, x] or f[y, x]? And you still miss 2 boundary conditions. (A rule of thumb for the necessary number of i.c. or b.c. is that it should be usually equal to the highest order of the corresponding derivative.)