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#1 Re: Help Me ! » Modified Euler method » 2014-05-03 05:25:07
Yes but the question like i posted , any idea for solving ?
#2 Re: Help Me ! » Modified Euler method » 2014-05-02 23:11:28
OK thanks for help I'll try to solve it by the assumption of dy/dx=z
#3 Re: Help Me ! » Modified Euler method » 2014-05-02 22:25:50
OK that's mean the integral to find the first derivative does't work
#4 Re: Help Me ! » Modified Euler method » 2014-05-02 22:17:03
But I think it's would be dy/dx=2x+y*ln(x)+constant
and if we have a boundary condition (dy/dx) I will find the constant
but in the question the boundary is y(1)=1, that's not work
#5 Re: Help Me ! » Modified Euler method » 2014-05-02 22:07:30
∫d2y/dx2=∫(2+y/x)
this lead to
dy/dx=2x+y*ln(x) , is this correct ?
#6 Re: Help Me ! » Modified Euler method » 2014-05-02 16:27:50
convert (d2y/dx2=2+y/x) to (dy/dx) by integral ??
#7 Re: Help Me ! » Modified Euler method » 2014-05-02 06:15:07
Can I make Integral to converted to first derivative ?
#8 Re: Help Me ! » Modified Euler method » 2014-05-02 05:38:21
The equation doesn't have (dy/dx) ,I think I don't need it
#9 Re: Help Me ! » Modified Euler method » 2014-05-02 05:11:51
y0=1
x0=1
do you mean ?
#10 Re: Help Me ! » Modified Euler method » 2014-05-02 04:42:51
OK that's what I need to know
Thanks for help 
#11 Re: Help Me ! » Modified Euler method » 2014-05-02 01:26:51
my problem is : can I assume dy/dx=z when this equation does not contain dy/dx
#12 Re: Help Me ! » Modified Euler method » 2014-05-02 01:10:10
Yes,but we can solve it by change the second derivative to first derivative but how to change this equation ?
#13 Help Me ! » Modified Euler method » 2014-05-02 00:41:02
- ammar
- Replies: 28
Use modified Euler method with (h=0.1) to solve the following differential equation:
d2y/dx2=2+y/x , Where y(1)=1 for x=1 to 1.4
How to convert second derivative to first derivative
#14 Re: Help Me ! » finite Differences method in matlab » 2014-04-17 01:59:27
I don't know I'll read some books about matlab and partial differential.
If you find anything please post it
thanks
#15 Re: Help Me ! » finite Differences method in matlab » 2014-04-16 23:34:37
Do you know how to simplify these equations?
#16 Re: Help Me ! » finite Differences method in matlab » 2014-04-16 22:33:07
How to solve it or method of solution
How to sub equations in each other
#18 Help Me ! » finite Differences method in matlab » 2014-04-16 17:21:57
- ammar
- Replies: 10
Hi
I need the code or information about solve the (finite differences method) in matlab for 3 equations
#19 Re: Help Me ! » triple numerical integration » 2014-03-31 03:32:39
HI again ,
Can you find triple numerical integration by surface not by line ?
I searched about it but I don't know the method of the subject
#20 Re: Help Me ! » triple numerical integration » 2014-03-24 04:19:35
Please if you find an example about triple numerical ,I'll use matlab it's easier
#21 Re: Help Me ! » triple numerical integration » 2014-03-24 03:59:57
I mean the formula 2.9 , in triple I don't know how I deal with slice of dz ,
I think we try the inside double integration at each slice of dz
#22 Re: Help Me ! » triple numerical integration » 2014-03-24 00:19:11
I need example to verify this formula and I'll try to solve it by matlab and by steps
#23 Re: Help Me ! » triple numerical integration » 2014-03-23 07:04:07
OK thanks I'll try with this
#24 Re: Help Me ! » triple numerical integration » 2014-03-23 05:30:46
No I need at least one example , I don't have any information about it
#25 Help Me ! » triple numerical integration » 2014-03-23 04:24:35
- ammar
- Replies: 13
HI
I need any information or book about (triple numerical integration)
:(