In particular because the TAB key doesn't work in Maple, is it possible to define a shortcut key for a few spaces? I found this quite annoying that I couldn't simply tab over a few spaces when programming. Is Maple going to fix it in the future? Why doesn't TAB work anyway, did they forget about it?

I have a particular system of partial differential equations to which I want to apply a change of variables involving square roots using PDEtools[dchange]. The result turns out to be not in a simple form due to the square roots. Why is this so ? Is there a better way solving the problem than the one I am suggesting below ? The system of partial differential equations of interest is the following:

Hi all,

While solving a différential equation, I encounter an integral:

 

Anyone know a slick way to change the arguments of a function to possibly different things depending on what they are?

 

Let's say I have objects a, b and c.  a and b are of type function and c is of type set.  F is another function object.

 

F(a,b,c) is defined.

 

What I want to do is construct F(g(a),g(b), h(c)).....

 

Ideas?

Reduce::nsmet: This system cannot be solved with the methods \
available to Reduce. >>

 

Hi, I'd like to know where's maple directory by default on my computer. I just found a program that would really help which is run on maple. I will join the read me file of the program i want to install.
The unclear part for me is "  (b) Copy the file dot.mapleinit in the Bethe root directory into your
    home directory where it is read in from MAPLE      cp dot.mapleinit ---> [user-home]/.mapleinit"

Hi all

Hi everybody.

 

Hey guys,

I am struggling again trying to solve very similar pde in Maple V.

pdesolve(-a*u(t,x)+diff(u(t,x),t)+(c^2)*b*(1/t)*[log(2*T/t)]^(-b-1)diff(u(t,x),x,x)=0,u(t,x))

Could anybody try running it in the older version? Are there any solutions?

Thank you,

Vilen

Hallo Everybody,

I hope someone can help me.

I want to solve numerically the diffusion equation,

          diff(csh(rh, t), t) = Dif*(diff(rh^2*(diff(csh(rh, t), rh)), rh))/(r0*rh^2)

          where "Dif" is the diffusivity and "r0" is the initial value of rh (the equations were normalized).

subject to the following boundary and initial conditions:

In Classic, this input:

753406.29+42098.70;

yields this output:

795504.99

But in Standard, the same input yields

7.9550499 10

How do I set my options in Standard so that the output format is like it is in Classic?

I poked around "display options" etc. but did not find anything.

 

If I have some element tau in my matrix, how do I declare it to be real?

 

> with(LinearAlgebra);
> A := `<|>`(`<,>`(-sqrt(5/3)*tau, -tau, 0, 0), `<,>`(-tau, -sqrt(3/5)*tau, -2*tau/sqrt(15), 0), `<,>`(0, -2*tau/sqrt(15), sqrt(3/5)*tau, 0), `<,>`(0, 0, -tau, sqrt(5/3)*tau));

 

The time function doesn't seem to be working consistantly.

Following the example in the help page for the time() function I can't get as low as .041.  The best I get is .046 and sometimes .047 .062 and .063.  Are there services running in the background that can affect the run performance like a firewall for example?

Can anyone else get .041?  For comparison I'm using a P4 - 3 GHz. and 2.5 Gb RAM @ 533 MHz. with 48 processes running in the task manager.

In doc A, I have a matrix in 2D Input.

In doc B, I

Change input to 2D Input; type in natrix name, :=. Cursor location says it is 2D Input. I copy matrix from doc A and paste it into doc B. The style changes to 2D Math.

~R~

So I'd like to take two ranges of numbers and simlify their combination.  Example:  RealRange(2,5) union RealRange(3,6) should yield RealRange(2,6), but the union function doesn't accept RealRange data types as its argument.   Is there an available command that will produce the desired result?