Hello everyone,

This is probably a simple question for most, but I am not very familiar with programming in maple.  I need to create a program that will find the position of a given value in a list.

Example: L= { 1,3,5,6,7,8,9,11,12}

a)When x = 7

b) When x = 12

etc.

Any help would be appreciated!

Hi;
I need your help:

1- How to improve the implementation of the functions or procedures.? As displayed, is the result of the Matlab function "FromMFile"

2- how to plot the  standard basis vectors in which the cylinder is initially represented.

hi , can anyone tell me what's wrong witht his! please!!

  thank you in advance!

> choleski:=proc(S::array,n::integer)
> local L,i,j,k,t:
> L:=matrix(n,n,0); # matrice nulle d’ordre n
> for j to n do # calcul de L, colonne par colonne

Hello,

Here a simplified version of my problem.  I want to evaluate the double sum

sum(  sum( k+j, k=0..5), j=1..8);

But I would like to compute the sum only when  the condition    15  >=  k^2  +  j  >= 3  holds.

How can I include that restriction?

Thanks for your help,

Jean-Jacques

Hi All,

Given the partial differential equation of a plate on an elastic foundation, how do I solve the analytical solution for the deflection given the boundary conditions.

This is what I have:

partial differential equation of a plate on an elastic foundation:
> pde := E*(diff(w(r, phi), r, r, r, r)+2*(diff(w(r, phi), r, r, phi, phi))+diff(w(r, phi), phi, phi, phi, phi))+k*w(r, phi) = 0

The solution for w(r, phi) of this is:

Hello dear friends

I have two realted questions

1. How may I generate   a table  n x 4, where in each rows appears

[    n   |   n^2  |   n!  |  n^2 -n!    ]  for n= 1..5 ?

2. How may I export to the previous table/matrix/arrange  to LATEX?

Thanks a lot for the help,

Jean-Jacques.

Having a few problems in working out system transfer functions using the SystemConnect command.

1. I think that there are errors in the description of the function within the HELP file. In the Description there are five bullet points. It is the third bullet point I think has an error. yi maps the global inputs to the global outputs, OK - however the text describes this as 'the number of rows in the yi matrix is determined...

I do not understand why different results are displayed. I would like the solution to be the smallest positive value (ie:4) but cannot seem to do this.

Thank you

Hi I attempted to plot this but failed... my instructor gave us a list of functions according to our name and when I put them together into an equation to plot I kept getting an error. I included the function list at the bottom. I am using DEtools:

Loading Student:-Calculus1

with(DEtools):

#tangent field for dy/dx = AB + CD where A -first letter of my name, B - second letter of my first name, C - first letter of my surname, D- second letter of my surname, which in my case (Tran Lam...

How do I open a Maple package that enables the tangent fields associated with first order odes to be calculated automatically?

Hi all,

I am using Maple 13. I don't know what I am doing wrong here. I am defining variables, and it seems to be losing the assigned values of some of these variables along the way. See illustration below :

What is going on here ?

Thanks and regards,
Andrew J Fortune,
Melbourne,
Australia

Hi,

I want to create a sequence of numbers within a vector. For instance, I'd like for i from 1 to 4 to be the co-ordinates in a vector, ie [1,2,3,4]

This is what I have tried:

Vector([for i from 1 to 4 do i, end do];);

in hope of obtaining [1,2,3,4], but get error messages. Can anyone help?

I was wondering if anyone can help me with part of this problem iv been stuck on for a while now. I am wanting to write a procedure which will create an array containing a loop of all the Fourier approximations of a function f on     [-Pi, Pi].

Thanks Caitlin

Sometimes when I solve an equation using asumming somtings go wrong.

Exampel:  solve( x^2=4,x) asumming x>0 gives me two solutions!What is wrong?

janstef

Hello all!

Consider I have an array like this:

A := [[1,2,3], [2,1,4], [1,2,2], [4,2,3], [1,3,2]];

Now, I want to make a new array from the above one where contains those elements of "A" which their third columns are smaller than "3". (I mean in this example the third and fifth element, but in a big array I can't find these elements as simple as this example.) What should I do?

thanks!