Hi all,

I  have problem about translate from maple to C Language. I do project about cryptography, now I can write command in Maple. I don't know how to translate to C language

How should i do?

Anser me please.

Thank you so much.

Hi all,

How do I plot the output of the Maximize command?

For example, here's a function that determines the value of x in the range [0,3] at which a particular fuction is maximized:

with(Optimization);

f := (x,t) -> -x^2+3*t*x-1

fmax := t -> rhs(Maximize(f(x,t),x=0..3)[2][1]);

How do I switch the autosaving off?

Hello! I am trying to create a double exponential smoothing model by optimizing the parameters a and b. The model is quite big and Maples needs a very long computation time. Can anyone help me on this one? I'll attach my file: View 9101_double_exponential_smoothing.mw on MapleNet or Download 9101_double_exponential_smoothing.mw

Hi

I am seeking a generalized collect command in Maple to collect a expresion W

W:=mu[1]*mu[3]^3*sin(mu[1]*Pi)*cos(mu[2]*Pi)*sin(mu[3]*Pi)*cos(mu[4]*Pi)+mu[4]^3*mu[3]*cos(mu[1]*Pi)*cos(mu[2]*Pi)*sin(mu[3]*Pi)*sin(mu[4]*Pi)-mu[3]^3*mu[2]*cos(mu[1]*Pi)*sin(mu[2]*Pi)*sin(mu[3]*Pi)*cos(mu[4]*Pi)-mu[4]^3*mu[2]*cos(mu[1]*Pi)*sin(mu[2]*Pi)*cos(mu[3]*Pi)*sin(mu[4]*Pi);  

to two different expresions W1 and W2 as

W1:=mu[3]*cos(mu[2]*Pi)*sin(mu[3]*Pi)-cos(mu[3]*Pi)*sin(mu[2]*Pi)*mu[2];

Hi there,

I'm having a problem when attempting an implicitplot of an expression containing an integral.

Here is a minimal example of what I'm trying to do:

restart: with(plots): with(DEtools):
f:= t-> t^(-2);
F:= x-> Int(f(t), t=x..1);
G:= (x,y) -> evalf(F(x)-y): G(x,y);
implicitplot(G(x,y), x=0..1, y=0..1);
plots[implicitplot](G(x,y), x=0..1, y=0..1, grid=[100,100]);

The above results in the following error message:

Dear All, I'm trying to plot points generated by something called the logistic map by using the following code:

> L:=array(1..30,1..1);
   x:=0.3;
   for i from 1 to 30 do
   x:=4*x*(1-x);
   L[i,1]:=x
   od;
   print(L);
 

>Lpoints:=convert(L,listlist);
>plots[pointplot](Lpoints,symbol=point);

Hi.  I'm trying to compute a posterior distribution (Bayesian inference), which requires integration.  I have set up the integral and have attempted to solve it numerically using evalf(Int...) with Maple 12 Worksheet interface and the command-line version.  When executing with Maple 12, I eventually (hours later) get a error - "connection to kernel lost".  When executing with the command-line, eventually the process seems to terminate.  The information about memory used stops updating and nothing happens.  Here is my code:

Hi

I used maple to solve a 4th order ode:

ode:=(h2(x)*diff(eta1IItrans(x),x$4)+diff(h2(x),x)*diff(eta1IItrans(x),x$3)+(1/(g1*h1))*((w^2)*(h1+h2(x))*diff(eta1IItrans(x),x$2)+(w^2)*diff(h2(x),x)*diff(eta1IItrans(x),x)+(w^4/g)*eta1IItrans(x))=0);

avec h2:=x->h2I*exp(d*x):

I have 2 questions:

-I can get a solution only with precise values of parameters (g, h, d etc...) but I would like a literal one.

And again, I've got a problem with drawing graphs with DrawGraph. I've generated some scale-free networks with Barabasi's algorithm (not implemented in Maple 12. I did that myself).
Now, I wanted to display these graphs in a nice way, in which you can clearly distinguish the hubs from the other nodes. I thought that the "style=spring" command would do so, but it puts nodes very near to each other, sometimes even overlapping.
Is there another solution to draw such a scale-free network in a nice way?
Thanks for helping.

I would like to investigate the JCHelpCallBack example using OpenMaple. The sample can be found under the directory,

$MAPLE/samples/OpenMaple/Java/jcmaple/

I've set LD_LIBRARY_PATH. And I can compile and run the jcmaple.java sample. That starts up what appears to be a commandline Maple session. And within that session I can issue the help query ?int OK. I can also issue INTERFACE_HELP(display,topic=int) and that too works, although it dispays as double-lined.

Does the following error message mean that the only way to remove RealDomain is to exit Maple & then start a new session?

 unwith(RealDomain):

hi and thanks for your comment, is it possible to establish some dir as default currentdir (independently of how maple is started)?. How can I know which maple procedures will use currentdir as default directory? Perhaps all of them? If not, what about the others? what does "home directory" mean in maple context? thanks again