Dear Maple Users,

I'm beginner in Maple and I will appreciate any help and guidance.

I need to integrate function (which values vary in wide range) on the specified domain.

Maple returns Float(undefined) error. Is there any way to overcome this?

the question is in attached Maple file mp_qsn.mw

Thank you in advance.

Trying to plot a 3-d plane of random numbers.  How do I index the matrix A in plot3d? 


> with(RandomTools);


> A := Matrix(2^5, 2^5, Generate(distribution(Normal(1, 0.1e-1)), makeproc = true));

> plot3d([x, y, A(x, y)], x = 1 .. 32, y = 1 .. 32);

While substituting expressions for θ(t),θ'(t),θ''(t) with some rather simple polynoms (see attached demonstration), the result icludes terms such as "·²" or "θ1·" (see terms multiplying ε⁸ and ε⁷in result for C1). It seems MAPLE treates the "·" sign as a variable/constant instead of as an operator. What am I doing wrong?

restart:with(plots):

Nb:=0.5:Nt:=0.5:G:= 2:B:= 2:beta:= .2:Q:=2: alpha:= 2:

de := diff(alpha*f(y), y, y, y, y)+G*(diff(theta(y), y, y))+B*(diff(phi(y), y, y))

+6*beta*(diff(f(y), y, y))*(diff(f(y), y, y, y))^2+3*beta*(diff(f(y), y, y, y, y))*

(diff(f(y), y, y))^2 = 0, diff(theta(y), y, y)+Nb*(diff(theta(y), y))*(diff(phi(y), y))

+Nt*(diff(theta(y), y))^2 = 0, diff(phi(y), y, y)+Nb*(diff(theta(y), y, y))/Nt = 0:

Hi, when i use the "export" function to export a set of matrix, it works fine.

But when i try to use it to export one number, it won't do it for me, for example the value of a, where a:=5

Export(a,"File1","aValue","A1")

How do i export one value? please help. Thanks.

I installed M16 32 Bit on my new machine with Win7 64 Bit.

But the following results in crushing mserver.exe:

  tmp := proc( x :: float ) :: float; 2.3 * x end proc:
  cp:=Compiler:-Compile(tmp);

with system info below. 

Do I have to set certain rights for the compiler or define a specific working directory?

The FAQ http://www.maplesoft.com/support/faqs/results.aspx?search=compiler does not help me.

Dito http://www.maplesoft...

restart;

pde := diff(u(x, y), `$`(x, 2))+4*(diff(u(x, y), `$`(y, 2))) = -x*y;

ibc := {u(0, y) = 0, u(2, y) = 0, u(x, 0) = x*(4-x^2), (D[2](u))(x, 0) = 0};

sol := pdsolve(pde, ibc, numeric);

sol:-plot3d(x = 0 .. 2, y = 0 .. 1, numpoints = 2000, axes = boxed);

The final command produce a figure with some sigularity.

how to fix it? I need help, thx you very much.

I'm sure there are other Maple users who have done these things, but I'm in the early stages of learning Maple 15 after moving (up) from Mathcad.

1. How do I plot a simple wireframe map of the world?

2. If I have a dataset of gridded data where the data is in the form [latitude, longitude, number] how do I map that data to a grid on the globe and give it a height according to the magnitude of the [number]?

3. Is there a way to smooth the heights of each...

How to run a command using Maple Command-Line on Ubuntu.

When I run the following command through terminal:

/home/myuser/maple14/bin/maple -c 2+2

Maple runs as expected, but the command (2+2) is not calculated.

How can I solve this?

Hi everyone,

I am trying to use the solve() function to compute the first zero crossing (root) of the BesselJ function. I am aware that BesselJZeros does work, but I am really trying to use solve. Currently if I use the following:

root1:=solve(BesselJ(0,x),x,allsolutions=true);

Now if i use:

evalf(map(allvalues,root1));

I obtain:

-2.30382558

If I try to use solve(BesselJ(0,x),x,allsolutions=true, useassumptions) assuming x>0; 

Fine $a_{n}$ of sequence 5 , 8 , 26 , 48 , 122 ,...

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.

Can we plot without values to variables that we know are constant or do we always need to assign some kind of a value?  

As an example lets just go back to a first/second year classical mechanics course.  We'll just use the simple case of a falling projectile.  The object has a velocity of v0, with a gravitational force mg and resistive force kmv.  Using Newtons 2nd law of motion we can set up the equation.

Anyways as always maple easily...

Dear Maple users

I like to use animations in Maple for different educational purposes. The other day I tried making an animation simulating a simplified Epicycle, which is a small circle with its centre running on a larger circle. The smaller one has a ball running on it with a constant velocity. I used the following code:

> with(plots);
> with(plottools);
> omega := 1; k := 5; R := 5; r := 2;
>
> plot1 := plot([R*cos(omega*t), R*sin(omega*t), t = 0 .. 2*Pi]);