Hello everyone,

I am trying to solve a system of odes but it takes too much time to excute.

I have attached the sheet. Please have a look.

ode.mw

Thanks

I want to remove a new (unintentionally created) Mapleprimes account so that I can change the email address of an originial account to my new address which is the address now attached to the new account.

I can find no way to do this. Does anyone know how?

Hello!

I'm new to Maple and I was wondering how to input and solve a piecewise function composed of (1) three functions, and (2) more than three functions.

Txs in advance!

I have been solved a optimization problem by

Hi all,
I plot a cube using the command

with(plottools);
cube := cuboid([0, 0, 0], [1, 1, 1], color = black);
plots[display](cube, scaling = constrained, axes = boxed, style = wireframe, thickness = 3, orientation = [40, 75]) 

Now I would like to plot with different colors some of the faces/edges of the cube? How do i do it? Is it better to use a different code for the cube itself?

Bests
Manu 

I upgraded to Maple 17 from Maple 16 today and I noticed that all of the sudden I can not enter the } symbol anymore although the { symbol works just fine. (I have an azerty keyboard so those keys are AltGr+0/ctrl+shift+0 and AltGr+9/ctrl+shift+0 respectively). My solution right now is to enter the symbol each time via the fences panel, but  since it's a commonly used key this isn't really optimal. 
Does anybody know what causes this and how I can fix this? 
Thanks!

In a "If" conditional statement, maple returns

Error, cannot determine if this expression is true or false: 1.551691464 < (5/6)*Pi

Maple has a number of protected names that cannot be redefined without some work.

A common request is to use the letter j or J instead of the default I for the imaginary unit. Also common is to be able to use the letter I as an ordinary variable, rather than as an imaginary unit. For this, there is a very convenient interface command.


restart;

(-1)^(1/2);

I

interface(imaginaryunit=J):
(-1)^(1/2);
 
 J

(There...

Hi,

I have tried to solve a simple cappilary expresion but I'm not sure...
Please look for ODE, describing in the eq10.
Further I can't explain ln(-hmax).
I will be appreciated for any help.

wzel 

infiltr.mw

Hi

please help me in the following problem:

h[i](t) are  functions , i=0,1,..,31

                for example: 

                for i from 0 to m-1 do

                h[i]:=unapply(t^i);

      ...

i do not have a handbook of function properties, or properties from analysis

is there someone written a package to list which properties a function have after input a function?

Hi,

The subs command is not working properly for Vector type, see worksheet.

I can use simplify instead, but that's not what I really wanted.

Download vsubs.mw

Casper

I've used fsolve in Maple 6 to find the roots (real and complex) of a polynomial.  I'd like to create a plot showing the location of those roots in the complex plane.  How can I do this?

Hi

I want to creat a vector that every of it's element are a function of for example 't'.

for example:

Hi,

How would you go about checking whether a vector is a scalar multiple of another in the set? eg. my set is {[-2, 1, 1, -2, 1, 1], [-2, 1, 1, 2, -1, -1], [0, -1, 1, 0, 1, -1], [0, 1, -1, 0, -1, 1]}. I need to get rid of one of the last two, since it is (-1) times the other.

What would be the most straightforward way of doing this? I've tried doing something along the lines of V1=c.V2 for each component and then checking...