Hello everybody,

I have a numerical list of points' coordonées defined as :

{P1,P2,P3, ...}

where P1 is defined by [r,theta,phi] radius, azimut, elevation.

Can I plot this in a cartesian coords whitout calculing X=r*cos()*sin() .... ?

Thank's

Dear friends,

A simplified version of my problem now is the following. I need to represent the contourplot in the plan (x,y)  of a conditional double sum:

contourplot( sum(  sum(   (i+j)!/k! * (101-j-k)!/(100-k)!    , j=0..1), k= 0..100), x=0..0.5, y=0..0.5)

where the sum runs under the condition that (j,k) satisfies  (  x+j*y+(1-x-y)/100*k >= 0.5  and  j*y+(1-x-y...

I want one of a sequence of questions to not show it answer. The other questions need to show their answers, but this one

cannot. I could make a separate assignment for this question but that seems rather painful. I use latex => .qu so the

solutions that don't require touching the editor is a plus.

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?