Hi,

I am trying to implement some numerical algorithm for an optimal control problem (still).

It involves double cycle. In the inner one two DE systems are solved sequentially and the result is used to update values of some objective function.

This part uses remeber option thanks to pagan  and is ok.

However, in the outer cycle I use the values of this objective function to obtain solution for yet another DE and update ICs for the inner cycle.

Hi,

   The error showed up whenever I tried to do the Maximum Likelihood Estimation with Global Optimization Toolbox.My objective (likelihood ) function f is defined as follows(A1 to A5 are intermediate variables; parameters  are x[1] to x[12]）:

   f := 0;

   for j from 1 by 1 to 21 do

       A1 := exp(x[1]+x[2]*c[j]);

       A2 := exp(x[3]+x[4]*c[j]);

can someone please help me out on how to solve second order nonlinear coupled ode with perturbation  method in maple

Problem. Let MNPQ be a square.  Find the other two vertices,  knowing that,  the vertices M(5; 3; -1), P(2; 3; -4) and N lies on the plane x + y - z  - 6 = 0.

This is my code

> restart:

with(LinearAlgebra):

M:=<5,3,-1>:

P:=<2,3,-4>:

N:=<x,y,z>:

A:=DotProduct(M-N,P-N,conjugate =false):

Here is an interesting problem I've pondered every now and then. 

One is lost in a desolate winter landscape with 3 blankets (thin, 2x thin and 3x thin thicknesses).  He can construct a shelter like a teepee with the blankets.  How could he best arrange the blankets to stay the warmest?  I'm sure everyone puts the thickest blanket on top when they make their beds, so would that not the optimal order?  Layer the outside teepee with the thickest...

One of my friends would like to buy a book about solving multiple integrals and/or ordinary differential equations with Maple (some newer version, let's say 13 and newer).

I know about this site: http://www.maplesoft.com/books/, but can anyone recommend some book(s) which is (are) worth buying?

http://aw.twi.tudelft.nl/~koekoek/askey/ch3/par28/par28.html

Which function represent phi in 3.28.1

The following example shows some typical computations with Householder- or reflextion matrices. Why are the second and third variants only slightly better than the first one? Could we get a real speedup without rtable/NAG/BLAS/etc. tricks?

$ maple15
    |\^/|     Maple 15 (X86 64 LINUX)
._|\|   |/|_. Copyright (c) Maplesoft, a division of Waterloo Maple Inc. 2011
 \  MAPLE  /  All...

I'm writing a maplet and I would like to put in my MathMLViewer two equations. Each equation in different line. How can I do this using MathML[Export]() while setting the value of MathMLViewer ?

with the information in the page

http://aw.twi.tudelft.nl/~koekoek/askey/ch3/par28/par28.html

what should do?

i guess to use Hn directly and use sum(Hn*z^m/m!)

is it possible in Maple?

Hi,

I have a third order system with nonconstant coefficients I would like to solve in Maple.  I have found a solution  but, I need a general solution.  I have attached the worksheet.  In the worksheet I have commented the system and the known solution.  AllCalculationsPertu.mw

Is there some way to construct the general solution from known solutions like a variation of parameters?

Any other method besides rsolve to solve genfun?

i discover it can solve variable coefficient and n coefficient too.

but sometimes n*P(n+1) make it can not solve, i have to remove n to P(n+1)

any paper describing the mechanism of rsolve, where it store the maple code of rsolve in maple 15?

In status box between "Evaluating..." and "Memory, Time, Mode" there is enough space. Would be nice to have there smth like "user-defined status" of ~100 symbols (or so). Instead of long printed log you could see status of current stage of long-term process.

Dear All,

Thanks for the previous support and help.

I am trying to solve a poisson equation, but I am getting Bessel function in the solution. Derivation of this equation with respect to 'r' gives more complex form of Bessel function.

Actually I am not sure should I continue with the problem and Maple will take care of everything or I have to modify in the solution.  

Equation 9 and Equation 11 needs to...