Hi everyone,

One minor question:

what would be the code to extract data in the form of 2-d points from the output of dsolve/numeric... output=Array/array?

say, I have 6-d ODE system and I wnat to extract data in the form of 2-d arrays of number s and then approximate this with some polynomials via Curve Fitting package.

For this I need the data to be represented as -dim matrices  for every variable.

Thanks for any help.

How to handle "division by zero" from EVERY environment in EVERY situation?

err_handle.mw

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error handler

We are trying to obtain an analytical solution of an integral in Maple. When solved numerically the integral converges, but we are not able to get an analytical solution. Any ideas?

The constants in the integral is computed independently, not sure if knowing them can help. The values are r=0.06, kappa=2.6, myksi=2.18, rho=-0.21, stdk=382.2, stds=47.8, kji=52.9 and ksi=62.3. We kind of need the analytical solution to handle the expression in further calculations, and...

how can i overcome the error that i am being given for the problem below 3*t*d(t,x(t),diff(x(t),t))² = 0

Quick one,

How do I count the number of terms in a polynomial

i.e. x^3+x+1 has 3 terms. I have big polynomials with hundreds of time and I want a way to count them

Many thanks

Pete

HI all,

I am trying to figure out in MAPLE how can I write     A * sin*theta + B* cos* theta  in the form as follows:

                                                   ...

If (abc‾) and (abcabcabc...abc‾)Ξ0(mod91).Find all non-negative integers (a,b,c)?

To insert a component on your worksheet you need to drag it out with the mouse.  Is there a way to create a slider, for example, on the worksheet without using the mouse? 

hi

in matlab POLYNOMIAL EIGENVALUE PROBLEM solve whit polyeig code 

why maple can't solve  ?!?

Hi everyone,

I am trying to build a function of dsolve/numeric solution which would not include procedures for defining the value of it.

First, I need to extract solution as a 2-d array, which will contain all evaluated points of solution.

Next, I want to define a function from this set of points (like interpolation).

Say, I have an array or list of numbers (2-d points).

Now comes the main question: is there a way to interpolate some...

Hi all, i'm trying to generate a sequence of matrices from a matrix with variable coefficients with "seq":

seq(Vector(3, {(1) = 3, (2) = y, (3) = 11-4*y}),y=0..10) 

but it does not seem to work. Do you know why is that, and how can I perform this computation?

Thanks. 

how do you draw a function r=sin(alpha) using animate and "polarplot".

Let (d1): x = 2*t +1, y = t-2, z =-2*t+2 and 

(d2): x = 2-m, y = 3+m,z = 4+m 

be two lines and (P): x - y + z - 6 = 0 be a plane. Write the equation of the line (Delta), knowing that (Delta) parallel to (P) and cuts (d1), (d2) at the points M and N, respectively so that MN = 3*sqrt(6).

Hi,

I have a PDE system that I keep getting the "pdsolve->Warning: System is inconsistent" message.  Is there a way to see where the contradiction is, i.e. where everything is breaking down.  It is fairly complicated and not easy to eyeball such a thing.

Thanks!

Ryan

HI TO ALL. I M IN THE THEISIS PHASE OF MY MS. I NEED CODES FOR SOLVING A JOB SHOP SCHEDULING PROBLEM USING ANT COLONY OPTIMIZATION (ACO). IF ANY ONE HAS SUCH AN ACO CODE DEVELOPED TO SOLVE ANY TYPE OF JOB SHOP SCHEDULIGN PROBLEM, PLZ PLZ SHARE THAT AT seoccsf7@hotmail.com

I WILL BE GREATFUL

REGARDS