Hello experts,

I have function that I need to plot it  in hisogram:

f3 := (n) -> (2*n)!*(lambda)^n/(((n)!^2)*2^(2*n)*(lambda+1)^(n+0.5));

n=0..20 and lambda:=10

thanks.

I find the singularities of an expression by using the function singular and the result of this is what I call t1a below.

I am getting bcak into MAPLE after being away for a while, so this might be a trivial question, but...

I am using plots[pointplot] to plot a series of points.  The default min and max values on the x and y axes of the plot are the corresponding min and max values of the x(first) coordinates and y(second) coordinates of the points.  I can change this by left-clicking on the plot and adjusting the axes properties, but I am wondering if it would be possible...

Hi, folks.

I am presently working on a computer with no math software installed and would like some help with one quartic equation:

227.0207672x^4 - 703.4677734x^3 + 845.7313843x^2 - 465.6021423x + 98.41660309 = 0

I just need numeric results.

I tried to use the online Maple Math Oracles, but they don't seem to be working right now (at least, not for me).

I have done searches for other online tools, but so many come up with different answers.

Dear All

I have an equation that is related to some other equations. The main equation and some of the others are in the sum format. I want to solve the main equation in parametric format.

main equation: i want to solve it for m based on other parameters (n,p,alpha,c and perhaps k)

sum(m/(k*p*c+m*i^alpha), i = 1 .. n)-m = 0

there are some other requirements:

1/k = sum(1/i^alpha, i = 1 .. n)

sum(k/i^alpha, i = 1 .. n) = 1

My code consists of some execution groups. There are also some Text sequencies in between.

Now I've to calculate the whole thing with some differnet values so it would be great to be able to call a loop beyond the execution groups.

That of course doesn't work.

So is there any trick to execute parts of the whole sheet several times with different values?

Hello:

I am in need of help with Maple Linearize and an exremely crypitc and most un-helpful error message. What does this mean:

> linmod := Linearize(syss, parm, linp);
Error, invalid input: Linearize uses a 4th argument, linpoint (of type {list(`=`), set(`=`)}), which is missing

I can find nothing in the help in this.

Linearize works fine when running a sample program from the help files, but fails when I run my equations.  

Hi all,

For example, I have:

restart:

with(VectorCalculus):

z1:=1+I*5;

z2:=6-I*3;

I want to plot three vectors which are represented by z1, z2 and z1+z2.

I can plot them as:

PlotVector([<Re(z1),Im(z1)>,<Re(z2),Im(z2)>,<Re(z1+z2),Im(z1+z2)>],color=[red,blue,yellow]);

But the three vectors have origin at point x:=0 and y:=0.

I can change this by applying VectorSpace as:

vs1 := VectorSpace('cartesian', [0, 0...

http://oeis.org/A049525

Hi 

I am working on a physics simulation and I modeled an electric field in the space.

For this purpose I wrote an algorithm on Maple that returns me a list composed by the following lists:

[[x,y,z],[Ex,Ey,Ez]] in which x,y and z represent different positions in the space and Ex,Ey and Ez the components of the vector E in these points.

How can I plot these vectors with maple?

I was curious about converting between the different ways of writing a derivative in maple for the standard GUI.

I can convert y' to D(y)(x) but I cannot directly convert y' to the form d/dx y(x) unless I go to the
tools->options->display and change the typsetting level to maple standard and reprocess the line.  We are stuck with either one form or the other but not both without having to adjust the typsetting level in...

Dear All

Suppose that you have a pdf for the number of request receiving to a system with mean m. Suppose that it is not a common distribution.

Is it correct that there is a time between request with a specific distribution and the mean value of distribution is 1/m.

Is there any math rule that can prove it?

Best Regards,

Saeid

I've got the problem of warnings polluting my text outputs.

If I use interface(warnlevel = 0) the warnings are suppressed in the terminal but not in the files exported by the writeto command.

A sample:

> restart;with(CodeGeneration); with(plots); with(ListTools); with(FileTools);
> Matlab(u(1) = 3);
Warning, the function names {u} are not recognized in the target language
cg = u(1) == 3;
> interface(warnlevel = 0); Matlab(u(1) = 3);

I found following bug:

p := proc (k) sum((-1)^n*n/(factorial(k-n)*factorial(n)), n = 1 .. k) end proc; 

sum(p(k), k = 1 .. 1); 

sum(p(1), k = 1 .. 1); 

p(1)

Results must be same, but output is 0 (bug!), -1 (correct), -1 (correct)