Dear Maple Specialists,

I deal with a major MAPLE problem the last months of my PhD.

PROBLEM:
My programm contains a do loop which calculates for given PsiS (purple color) and for a range of Psi1 and Psi2 (blue color) from PsiS to 0, values for the products Qsu1, Qsu2, Q_tot .
The aim to calculate w(RLZ) which is obtained when the blue color loop is completed and Psi2 takes the final value 0.

After first tests with my brandnew Maple 16 (64bit) installation on Ubuntu Linux (12.04 Ubuntu Precise) I encountered the following error:

    `evalf/int`, "external hardware float library could not be found/used"

when I run e.g.

     evalf(Int(BesselJ(3,x),x=1..13,digits = 4,method = _d01ajc));

with OpenMaple

I wonder how to fix it.

I have

    export MAPLE=...

and

    export LD_LIBRARY_PATH=......

Hi, i am learning how to use "proc", could you please help me with this?

Case 1:

ReturnInteger:=proc(x,y,z)::integer;
g:=3+y;
x^2-g;
end proc:

ReturnInteger(3,2,4)

Case 2: How do I have a few outputs at a time?

Outp:=proc(x,y,z)::integer;
x^4+3
x+3*y;
y+z;
end proc:

Outp(3,4,2)

I am looking for it to produce 3 answers.

Question 3, when i took away the "::integer", it still works. May I know...

Dear Maple Users

I wonder if and how I can use Maple to calculate the difference of two sums algebraically, meaning if I dont have an explicit expression for the range of the sum. Rather, I want to calculate

Sum(i, i=0..N) - Sum(i, i=0..N, i!=k);

which should, obviously return k.

Is it possible to evaluate such an expression, and more advanced cases, using Maple?
Thanks for hints.

Hi all,

I am trying to plot multiple ODE plots in Maple 16. I can do them all separately, but cannot figure out how to make to solutions appear in the same plot. I have numeric solutions for sol1 and sol2, and I want to plot A(t), t for each one (together).

Thanks for the help!

I used to work with Matlab and recently I've started to use Maple. In Matlab you can make a function with several commands that does some calculations and calculates one parameter and you can call that function in another function. I need to the same in Maple (i.e. define a function with several commands that calculates a parameter and use the result of that function in another function). Any suggestion?

Hi,

I am trying to get the linearized model of a multibody system which has multiple inputs and multiple outputs. I initially used the "linearization template" of the MapleSim for an inverted pendulum, it worked fine. However, when I tried to get the linearized model for the double inverted pendulum, it gave this error message "problem at initial time: system is underdetermined; cannot solve for the following variables: 'Main.DFPSubsys1inst.eM_MyPendulum1_R1(t)'". 

Hi

How can i convert maple file to matlab ?

Hi everyone,

Is it possible to create a continuous time wiener process in Maple?

When we create a wiener process and then a sample path, the values of the sample path are saved in a table, so if I call W(1.5) there is no answer.

How can this be solved?

Thanks.

Hi,

I'm writting because I don't know how to solve this problem. I look for it in the web, but I don't

find the solution.

I have a vector with 4 variables, for example:

[54*a +3*b -c +d, 32*a -c +d, 96*b -69*c +85*d, 6*a + 9*b+3*c+9*d]

In really there is 4 equations. And I need to solve with other vector like:

[0,0,0,0]

I don't know the commands for do this... I search it in internet but I don't find anything.

Is there a possibility in Maple to define a set of elements using a rule or semanticdescription. The problem is that  I need to define a set of numbers of the concrete form (e.g. of the form a+b\sqrt[3](2)). Or more complecated task: the set of pairs (a,b) where a,b::integer. And then I need to define an abstract operation on that set. I explain: my global task is to create a procedure to define whether a set with an operation is a group (where a set is defined using a rule).

u''-w^2+Eu^2=0,           u(0)=A,  u'(0)=0

How can I solve this question the variational iteration method with maple.please help me!

hi

I have 10 equations and the summation of them will give me the answer but each of them have small numeric noises and the sumation of them makes the final result inaccurate.  For example the first equation is 

I have an equation that is a function of two variables i.e Cp(beta,lambda). I have to plot several Cp curves on the same graph for a range of lambda=0..15 (x-axis). The 1st curve I want Cp@beta=0, 2nd curve Cp@beta=5, 3rdcurve Cp@beta=10 .... and so on

How can I do this without having to define a separate Cp equation for each beta value?

Hi！

I get the result which was stored in table, such as:

m:=table([1=[151，153，155，160]，2=[157，152，153，150]，3=[161，158，152，156]])

I can't export it to excel, because the type of m is table, the export  instruction must be array or matrix.

Please help me, Thank you!