How to find the limit

>limit(sum(1/binomial(n, k), k = 1 .. n),n=infinity);

with Maple?

How to find the limit
limit(sum(n*x/(n^2+x)^2, n = 1 .. infinity), x = infinity);
with Maple?

With Maple15.01 on a x86_64 linux box running Fedora 14, I get the following error when trying to run a basic comand from LinearAlgebra:

> with(LinearAlgebra);
> R := RandomMatrix(4, 4):
> Eigenvalues(R);
Error, (in ifactor/SmallFactors/ext) external library libmodLA.so could not be found/used

Could someone please tell me what the required environment setup is so that Maple can find and use the external shared libraries?...

Hello,

I have a problem that Maple 15 is not possible to start (process is there but GUI is not visible).

On the same computer (HP 8540w) I have the problem with Maple 14 too. The GUI is started but it is not possible to do any action in it because it does not respond.

This problem occures now. I am sure that some months ago it works properly.

If you have any suggestion I do welcome it.

Thanks

zakyn

hello,

I am trying to evauate a function 23.45*sin((360*(x+284))/284) for x=1..365

how can i do it without having to type in eval(a,x=x1) 365 times....

thank you in advance for your suggestions

sincerely,

Judith

I am creating a maple document to display the tangent plane to a function. the resulting function and tangent plane are displayed in a plot component. The problem I am having is that I can display both the function and the tangent plant at the same time with the foloowing statements:

PlotSurfs := plot3d([Func,TanPln], x = Xo-DmX .. Xo+DmX, y = Yo-DmY .. Yo+DmY,axes=VarAxes,scaling=VarScl,orientation=[OrX,OrY,OrZ]);

 DocumentTools[SetProperty](PlotWin, value, PlotSurfs);

I'm trying to make a Cayley table with a group of permutations (Specifically S₃ and A₄) and can't figure it out.  I've been looking through the help without much success.  Here is the code I have so far:

Matrix(nops(permgroup(6, {[[1, 2]], [[2, 3]]})), proc (i, j) options operator, arrow; multperms(i, j, permgroup(6, {[[1, 2]], [[2, 3]]})) end proc)

Thanks

I have a calculation (analytic) involving sums (finite) that ends up with an expression structured like a sum over an expression with several terms, like

sum(Y(t)*cos(omega*t) + a*sin(omega*t)+b*cos(omega*t),t);

(The real case is more involved but this simple example shows the issue.)

What I want is to distribute the sum over each term separately, observing that a & b are numbers & therefore can be pulled out of the sum. Note that the expression...

Hi there,

I am designing a Buck Converter Power Supply, and in that regard I need to design the input filter and compare it to the characteristics of the converter, and for that I need to compare two Bodeplots.

How can I plot the two Bodeplots that I have attached in one?

Thank you

Download converter.mw

Download input_filter.mw

I have problem because mserver.exe stopped working

Yesterday that file was working very well.

help me please

robot-circulo-botone.mw

Hello folks,

I have some code where I need to solve a system of polynomials with 2 equations and 2 variables. I am only interested in Real roots, so I used the Isolate function.

However I would still wish something faster. Then I see what it seems a more specific function called BivariatePolynomial. However when using it, it seems as I don't get proper results. Below it is an example with both functions. Am I doing something wrong?

Isolate method:

How to calculate the integral
restart; int(cos(a*x)*cos(x)^(a-2), x = 0 .. (1/2)*Pi) assuming a>1
with Maple? Mathematica 8.01 produces a very doubtful answer
In[1]:=Assuming[a > 1, Integrate[Cos[a*x]*Cos[x]^(a - 2), {x, 0, Pi}]]
Out[1]=((-1)^a* a* HypergeometricPFQ[{1, 1 - a, 1 + a}, {3/2, a}, 1/2]* Sin[a *[Pi]])/(-1 + a)

Dear Dr. Lopez,

I would like to make a visualization of the following:

y=0.9       0 <= x <=4

y=1-0.1e^(-0.1x)   4<x

z=1

Please help. Thank you very much.

Sincerely,

Giao Che

Hi:

I am trying to use the Physics package to help me deal with non-commuting operators, but having some problems when trying to simplify expressions.The following should explain what i mean:

################

restart:
with(Physics):
# 'a' represents a quantum operator
Physics[Setup](noncommutativeprefix={a}, mathematicalnotation = true);

#we can try to expand to see that a and Dagger(a) do not commute!
expand((2*a+Dagger(a))^2);

Sorry if this is a well-known feature of Maple, but I haven't had much success searching for an answer.

Consider trying to separately solve each of the following two equations for x.

alpha * x + conjugate(alpha) * x = 1 

Maple 15 solves this equation to give x = 1/(alpha + conjugate(alpha)) , as expected.

alpha * x - conjugate(alpha) * x = 1

Maple 15 fails to solve this equation, returning nothing as if there is no solution.