Help !

I have Maple 13 installed on my computer, and when I click the icon in the taskbar, it just sits there and refuses to start.

I tried uninstalling and re-installing it, but that didn't work either. I also installed the latest Java Runtime Environment, all to no avail.

Was wondering if anyone else has had a similar problem, if they fixed it, and if so, how ?

Any help appreciated.

thanks,
Andrew

how do i write a command of a length of an array?

for example, c:=[1 3 5 7 8 2 1]..the length is 7 right? so how do i write the command..

it's a pleasure if any can help..

Hello everyone,

                       I have a par.mw file which contains a list of parameters. Now I have another reac.mw file in which I have to use some of those paramters. My question is what is the way for this without searching par.mw for those specific parametes values and then putting manually in reac.mw.

Hi,

I have enjoyed Maple computer algebra system as a platform for some work on prime constellations.  A summary of my work is here -

https://sites.google.com/site/primeconstellations/

At the bottom of the page are 3 relevant files and the filenames start with "A constellation"  Two of those files are .mw files.  The code searches the integers for solutions, and it works fine, but after about half a day, it consistantly crashes.  I...

I have defined a function q(t) in Maple as:

I then calculate it's 15th (!) derivative and assign it a name:

I wish to maximize this function on the domain [0,50], so do the following:

Hi all,

I have a little problem.

I need to let maple solve: int( diff( u(x), x$2) * v(x), x=0..1), where u(x) and v(x) are arbitrary single variable real valued functions. Moreover Maple should consider v(0)=v(1)=0 while doing integration.

Maple is returning the integral as it is. I think some how I need to force maple to use integration by parts but do not know how?

I know maple knows: int( diff( u(x), x$2), x) = diff( u(x), x)

> restart;
> F := Int(sqrt((2.138+0.3e-2*exp((4.2^2-z^2)/d^2))^2-2.141^2), z = 0 .. 4.2) = .5;

I have used the fsolve command, it seems like there is a problem.

thank you in advance.

I have install Maple13 and GRTensorII on my PC (Ubuntu12.04) ~ but GRTensor dosent work ! When i start Maple13 ,there are the words "Error, "/home/herb/.mapleinit" is an empty file". 

Is anybody can help me out of it? I really have done the following in README:

3. Go to the INSTALLDIR. In this directory you will find a file called
 mapleinit.sample. This is a Maple configuration script which has

> restart;
> with(LinearAlgebra);
> tolerance = 10^(-3); x1km1 := 0; x2km1 := 0; x3km1 := 0; for k to 2 do k := k; x1k := 1/4*(5-x2km1+x3km1); x2k := 1/3*(-4+x1km1-x3km1); x3k := 1/5*(1-2*x1km1-2*x2km1); evalf(x1k); evalf(x2k); evalf(x3k) end do;
                               1
                               5
                               -
                               4
                               -4
                               --

> restart; with(plots); with(LinearAlgebra); with(linalg);
> m1 := 2280; m2 := 2243; m3 := 2220; k1 := 300; k2 := 200; k3 := 100; F0 := 4.1; omega1 := sqrt((k1+k2)/m1);
> Sys := m1*(diff(u1(t), t, t))+(k1+k2)*u1(t)-k2*u2(t) = F0*cos(omega*t);
print(??); # input placeholder
> IC := u1(0) = 0, (D[1](u1))(0) = 0;
> csol := dsolve({IC, Sys}, {u1(t)});
%;
> p1 := subs(csol, u1(t));
> 
> plot(p1, t = 0 .. 10*Pi, 'color' = "red", 'thickness' = 2, labels = ...

Hello,

1-I have one calculation and the result is "Length of output exceeds limit of 1000000"... What can I do with this error?

2-I have one calculation and the result is "Error, (in expand/bigprod) object too large"... What can I do with this error?

I don't understand the error that appears in blue sentence. How can I solve this error? Thank you very much.

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.

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

rsolve(a(n)=2/a(n-1)+1,a(1)=1),

thx in advance.