Hi all, I have this same equation in another active thread also with boundary conditions. But now I have INITIAL CONDITIONS INSTEAD. I thought of just starting a fresh post. Here is my non-linear differential equation x := diff(y(r), r, r)+2*(diff(y(r), r))/r+ C*polylog(3/2, -exp(C2*(C3-y(r)))) = 0 with boundary values D(y)(0)=0 and y(0)=0. C, C1 and C2 are some numbers. The hint says to use procedure to solve polylog and then integrate the differential equation. I was wondering if I can get some advice on solving this equation.

Dear Sir
Can you please help me to minimize the following cost function with maple 10.I want that " t and T must be greater than zero(not equal to zero) , t < T  and C > 0." I tried a lot but I am not getting the values of t and T as mentioned above " ". Also why  the solution obtained by the 2 methods below is different  ? Which one of them is correct ?

Priyaasha

Does anybody know whether there's a library with which I can efficiently compute Minkowski-Sums of Polytopes or Polyhedra?

 

I will be collecting motion data. I believe there will be high frequency errors in the data. I would like to convert the data into the frequency domain and view the frequency amplitude. (I have only a slight familiarity with the Fourier Series and Fourier Transform.)

Hi everybody, I have six coupled PDEs to solve. Because of complexity, Maple can not solve them at once, unless I solve three of them first and then satisfy the boundary conditions, then import them into the remaining equation. So it is somewhat semi-manually. The problem is, I do not know how to extract and modify the answer function from the answer of the PDE. Could you please let me know how I can modify the answer and put it back into the other equations? Thanx,

Hello,

Is there a command for displaying the name of the actual worksheet file in Maple?
I am looking for a similar command to currentdir(). It displays the actual file path. I would like to get also the file name of my actual worskheet file.
I would like to attach this information to my results automatically.
 

Thanks for your help in advance.

Dear All,

This's my first post on this website; I'm hoping I can get some useful ideas on how to approach a problem where a PDE is coupled with an ODE, with initial and boundary conditions.  I'm using Maple 12.

The PDE is,

PDE:=diff(g(x,t),t)=diff(g(x,t),x$2)

the ODE is,

ODE:=diff(f(t),t)=g(1,t)-f(t)

The initial and boundary conditions are,

IBC:={g(x,0)=0,f(0)=.2,D[1](g)(0,t)=0,D[1](g)(1,t)=-g(1,t)+f(t)

I'm trying to solve and plot,

sys:={PDE,ODE}

sol:=pdsolve(sys,IBC,[g,f],numeric,time=t,range=0..1)

hi,

i'm lookin forward for a latest algorithm in artificail intelligence so that i cld take seminar at my college,cld u help me?

Greetings All

I have a module written in mathematica that works but would prefer to use it as a maple 12 procedure.  I tired the MMA in maple but it doesn't convert programs.  Can someone please help out.

 

 

 

 

To anyone out there who may be able to help

I have been researching into closed-form solutions of the 2 x 2 case of the Matrix Differential Equations

dM(s)/ds = [ M(s) , D(s)/2 ]   ,    M(0) = Mo in sl(2,R)  ( 1 )

dD(s)/ds = [ M(s) , K(s) ]      ,     D(0) = Do in sl(2,R)  ( 2 )

dK(s)/ds = [ D(s)/2 , K(s) ]    ,    K(0) =  Ko in sl(2,R)  ( 3 )

Is it possible to print a hyperlink to the worksheet (programatically, not by clicking menu)? In Maple 13 worksheets are errors and warnings displayed as hyperlinks to web.

 

I have designed a Maplet that can load time series data from any selected csv file (data organized in columns) 

and plot such a time series with the help of a Dropdown list. I think such a functionality is something Maple is missing.

I would like to have a simple button in the Maple original meny where you can load such a maplet from.

However , the maplet still have some problems which I was wondering if someone could help me iron out :-)

I have attached the worksheet.

 

Hello,

I wanted to use the Split command of StringTools package and I realized that it is different from the Split command in Visual Basic.

In VB one can give a third argument to define the maximum numbers of splittings:
For example : in Visual Basic returns the array . , i.e.the function splits the string at the first occurrence of the ":".

It would be useful the improve this command in Maple to have this possibility.

I just use the Maple for one month, I want to use the Graph theory Draw a graph(networks) with 70 vertex, but the arrow of edges is always near  the beging point of 

arc, which lead to the arrow can't  be seen clearly, I want to change the sytle of edges by changing the arrow position , but I don't find a correct method , can anyone help me ? Thank you very much!  

Hi guys, I am struggling with these three equations. The first is a nonlinear equation which can be solved numerically with the boundary conditions y(infinity)=0 and y'(0)=0. a1 := diff(y(r), r, r) = -2*(diff(y(r), r))/r-1.3*10^12*polylog(3/2, exp(b(u-y(r)))) Now y(r) depends parametrically on u and b which can be determined using these equations: a2 := -1.5*10^8*(int((3*polylog(5/2, exp(b(u-y(r))))/b^(5/2)+y(r)*polylog(3/2, exp(b(u-y(r))))/b^(3/2))*r^2, r = 0 .. 10)) = -129000 a3 := 3*10^8*(int(r^2*polylog(3/2, exp(b(u-y(r)))), r = 0 .. 10))/b^(3/2) = 1