Hi,

How to output the solution given by pdsolve as a *.csv or a tab delimited text file?

Maple has got to really work on its help documentation.

Thank you,

Regards

with plots

Eq[1] := 5*(diff(f(eta), `$`(eta, 3)))+(m+3)*f(eta)*(diff(f(eta), `$`(eta, 2)))-(2*m+1)*(diff(f(eta), eta))^2-(2*(2*m+1))*h(eta)-(m-2)*eta*(diff(h(eta), eta))

Eq[2] := g(eta)-(diff(h(eta), eta))

Eq[3] := 5*(diff(g(eta), `$`(eta, 2)))/Pr+(m+3)*f(eta)*(diff(g(eta), eta))-5*m*g(eta)*(diff(f(eta), eta))

BCs := [f(0), (D(f))(0), (D(f))(18), g(0)-1, g(18), h(18)]

pars := {Pr = .1, m = 0}

for i to 3 do eq[i] := subs(pars, Eq[i]) end do

I myself have written some programs of math in Maple (e.g. ABC.lib, ABC.ind, ABC.mw).
Who could help me how to upload these programs for everyone using easily without downloading and setup them? Thank you so much!

Dear all,

I wrote some simple functions in Maple 13, called "myproc" file,

and used startup code (edit-->startup code) to initialize it in a worksheet by: read "myproc";

Now I am using Maple 14, it does not work, says, "unable to read", sort of thing.

I have also tried to rename the file to myproc.m and read "myproc.m";

does not work either.

Is there any compatibility problem?

Thanks.

casper

there are several method to provide solve recurrence problems  in Maple,such as define ,rsolve,etc.here ,i meet a problem.

i want to compute the function Gamma(n), if n is a posint ,only given recurrence relation f(z)=(z-1)f(z-1),initial condition,f(0)=1,then i can get the true result with rsolve,of couse,i had made  an ansatz that z is n::posint.yet ,z is not posint? To suppose z  equal to 5/2, (2*n+1)/2 more generally,how can get the answer((2n-1)!!*Pi/2^n).

How to graph a function f(x)=x^2-8x+20. Then use Maple to find all the real and complex zeros?

I have a small Maple program which is manipulating lists which have a habit of becoming too long for maple to handle, which yields the error " 

TaiChi.mw

Hello,

The appendant is a figure I generated in a leisure time a fews days ago. There exist 3 problems, I feel they are a  challenge to me. The third problem is:How to rotate the figure automatically? Like this. Can you give me some advices? Thank you very much! Best Regards!

    I would like to pay attention  to the annular conference Polynomial Computer Algebra '2011, St. Petersburg, Russia, April 17-22, 2011. It happened to me to participate in  a few conferences organized by EIMI. In view of it I can say that    Russian mathematicians and  programmers are strong,  the organizers' hospitality  is warm, and    Saint Petersburg is a great city which is considered to be one of the most beautiful cities of the world.

I am trying to calculate inverse laplace of a 3*3 matrix (answer1 matrix). Find below the maple commands i used.

>with (linear algebra):

A:=<alpha,p11,e11|0,o11,-e11|a,m11,0>

N:=<s,0,0|0,s,0|0,0,s>

k:=N-A

Z:=MatrixInverse(k)

B:=<0,-m11,0>

C:=<1,0,0>

X0:=<isalpha0,ilalpha0,vcalpha0>

answer1:=Z.(X0+(ScalarMultiply(B,uinvalpha/s))+(ScalarMultiply(C,ealpha/s)))

what I dont understand is the purpose of the second order cone constraint.

The definition is: The first element must be at least as large as the Euclidean
norm of the remaining elements. The euclidean norm for R^3 is the distance from
origo to the point [x,y,z] due to pythagores theorm ie A^2+B^2=C^2 where
C is the distance from origio to the point[x,y,z]

Again for R^3 then we have [x,y,z] then x > the euclidean norm for (y,z) which
means that x> sqrt(y^2+z^2...

i wrote in Maple 14 this procedure:

in result i had error "Unable to parse" inline local k.

But it normally works in Maple 13. Plz tell me about this. I'm a new one in this. Thank you!

I would like to generate a symbolic sum of the first "n" derivatives of a function.

For example, f = 1/(1-x^4)

sum(f^(n),n=0..3)

The response from Maple is not as expected.  The first term is:  -1/(4*(x-1)) and the subsequent terms are less recognizable.

If I use "seq" with the same syntax, I end up with a list that includes the function and the first 3 derivatives.

I have also tried:

sum(diff(f,x$n),n=0..3)

Hi all,

I want to calculate for example MultiInt(x,[x,y]) or MultiInt(y,[x,y]), etc.. in a triangle whose the coordinates of the three nodes are (x1,y1), (x2,y2) and (x3,y3).

Thanks for any help

Kamel

HI,

I wannt to ploting vector form, such as [a_i + b_j + c-_k =0].

This vetor is not matrix form but equation form with direction.

I also express magnitude of vector and direction of vector in plot.

For example, I define a vector, 3*i + 2*j + 1*k = 0, and I want to ploting in 3-Dim with direction.

Waiting everybody advise.

Thanks.

--------

Maple version : MAPLE11

Major : physics