Hi I've been searching for an example of a while loop (no recursion) with 2 parts to it, but I have not been able to find one.  Does anyone know of any or can make one up for me?  Thanks!!!

I am a new user of Maple. Please guide me how to write these two equations in Maple15 to get solution. I have attached a file of these two equations.

Non-linear_coupled_e.docx

Thanks and kind Regards.

Recently, a Maplesoft customer service representative received an e-mail from one of our users with the subject line: A Simple Thank You. We wanted to share this message with you, as it demonstrates how the power and flexibility of Maple helped one student get ahead in his studies.

The following is an actual email we received from Eli E., which describes his experience using Maple as a university student.

Hello, my name is Eli...

I'm using Linearalgebra where I have a 10x1 matrix. I want to find the closest element of the matrix to origo, and the furthest away from origo. Can anyone help me to a understandable solution? :)

I adopted the approach suggested in an earlier post (http://www.mapleprimes.com

/questions/137320-Plotting-A-System-Of-Ode) for the known results,

but some part of curve is missing.

The output I got is

Hello All ,

I would liek to know if ther is a way to tabulate the results in a matrix form , like matlab does .Each time i copy paste it in excel and do the text to colum to sort out the results.It would save me a lot of time if anyone has an idea about this.

Like in the file i have results of various parameters displayed but how do i tabulate it.

Steam_800_below_crit.mw

Hi folks,

I'm trying to find the x value of my data set that corresponds to 50% of area under the curve. I've used curvefitting and splines to generate a piecewise function, and am able to find the area under the curve between my two approximated zeros (as this is the only relevant region). I would greatly appreciate any help, as I've been pulling my hair out for a couple hours now!

Cheers!

Hi everyone,

Do you know how to displya this kind of things on the screen: 

[12 Elements Column Vector

Data Type: anything

Storage: rectangular

Order: Fortran_order]

I think it is just that the vector is too big, but I want to see it. Any suggestions?

Thanks.

have some problem with Numerical Integration this function:

 > f221 := (0.1255914626e-2*(375.*sin(2.*a)*cos(b)*cos(w)-150))*Heaviside(abs(375.*sin(2.*a)*cos(b)*cos(w)-375.*sin(a)^2*sin(b)*sin(w))-150.)*sin(a)*cos(b)^3*sin(w)*(1.+.25*cos(2.*b));

> evalf(Int(f221, [a = 0 .. 2*Pi, b = 0 .. (1/2)*Pi, w = 0 .. 2*Pi], method = _cuhre, epsilon = .1)) 

How can i take this integral and  decrease calculation's time? I was trying different...

Some time ago, I posted a two-letter-words quiz for Scrabble players. That one is particularly useful to beginner players wanting to increase their scoring opportunities. I've created another worksheet for those looking for a greater challenge. This one tests your knowledge of the three-letter words that can be created from the valid two-letter words. Enjoy!

restart:
with(PDEtools):with(plots):
declare(u(x,y,t)):
PDE1:=diff(u(x,y,t),t$1)+a*u(x,y,t)*diff(u(x,y,t),x$1)+diff(u(x,y,t),x$3)+

b*diff(u(x,y,t),y$2)=0;
Sol1:=pdsolve(PDE1);

Test1:=pdetest(Sol1,PDE1);

params:={a=6,b=1,_C1=1,_C2=1,_C3=1,_C4=1};

Sol2:=subs(params,Sol1);

plot3d(subs(t=1,rhs(Sol2)),x=-10..10,y=-10..10,axes=boxed,grid=[50,50],

style=patchnogrid,shading=Z,orientation=[-40,50]);

Hi everyone,

Can somebody help me to make this code faster? Or if somebody have fast computer and can execute it and give me the result.

When I execute it, I don't have the result of the last command and get the error of not enough memory allocation or something.

Here is the code:

>restart;with(LinearAlgebra):with(VectorCalculus):with(linalg):
> a1:=1:
> a2:=1:
> T:=<x1,x2,x3,x4,y1,y2,y3,y4,u1,u2,u3,u4>:
> 

I have created the following:

a := proc (b, r)
local x, n;
x := [seq(b, x = 0 .. 99)];
for n from 1 to 99 do x[n+1] := r*x[n]*(1-x[n])
end do;
return x
end proc;

> a(.5, 2.5);

This returns a list of points in a list representing a population at each generation from x_0 to x_99.  How can I get Maple to plot these points as a time series?

The new VolumeOfRevolution command in the Student[Calculus1] package has lots of nice features for controlling the output (Riemann sum, 3D plot, animation, inert integral, numerical approximation, ...).

The default colors for the plot are not very appealing. Not only is the pink easily washed out by a projector in a moderately light room, but the detail is missing. To illustrate, consider

with(Student[Calculus1]):
VolumeOfRevolution(2-x^2, x, x=0..1, output=plot );

Hi,

I want to put some code into a Maple library. I'm new to producing packages. The following code runs OK, but when I try to use one of the procedures added by the LibraryTools[Save] command, Maple returns

input: MySum(a, b);
output: MyMapleLibrary:-MySum(a, b)

Why does Maple return an unevaluated call to MySum?

The code is below:

restart:
with(LibraryTools):

MyMapleLibrary:=module()
  description "A sample Maple library.":