Is there anyway to get Maple to solve for a limit of integration.  every time I try Maple gives me an error.

Sorry that this may not belong here but I thought I would ask, it is interesting. 

Now I'm not asking for the winning numbers list but rather the numbers chosen by people (the thousands of non winning ticket numbers per game)  Is there a database somewhere we can access that stores the list of picked numbers?  It would be interesting to find out how randomly people pick numbers, do people flock to certain numbers more often than others?

I...

Hi,

I have the following ODE:

dx/dtau=s-rx+x^2/(1+x^2)

Where r,s,x vary over an interval. 0<r<0.5 ; s and x any real value (positive). Our instructor wants us to numerically integrate this. He has a program available on his website but I would like to know how to do this in maple. I have the answers to the question already but I would like to use maple to find the answers. This is for a course in Nonlinear Dynamics and Chaos. I am not very proficient...

I am dissapointed. I recently upgraded to Maple 15 and I bought a license for the NAG libraries thinking that I could use NAG mark 8 chapter F12 to solve my Eigenvalue problem with large sparse matrix, in reality, there seems to be no implementation of these NAG routines in Maple. is there a way to get around this problem? I know I can also connect to MATLAB to take advantage of the integrated sparse handling but I want to avoid buying another piece of software(you know we scientist aren't millionaries).

I need a power regression function and I need it to be accurate, look what happens

> X := Vector([1, 2, 3, 4, 5, 6], datatype = float);

> Y := Vector([1, 4, 9, 16, 25, 36], datatype = float);
> PowerFit(X, Y, x);

                                            (1.9999999999999998)
      (1.0000000000000004) x                          
> f(x):=1.*x^2.;( using CTRL+L to get the result)

                                         1.9999999999999998

restart;

P := proc (x, lambda) options operator, arrow; piecewise(x < 0, 0, lambda^x*exp(-lambda)/factorial(x)) end proc;

The upper confidence limit. When the confidence limit is 95%, e is 0.05

Lu := proc (a) options operator, arrow; sum(P(x, lambda), x = 0 .. a) = 0.5e-1 end proc

Lu(10)

exp(-lambda)+lambda*exp(-lambda)+(1/2)*lambda^2*exp(-lambda)+(1/6)*lambda^3*exp(-lambda)+(1/24)*lambda^4*exp(-lambda)+(1/120)*lambda^5*exp(-lambda)+(1/720...

This is the frame of the bike rear suspension i'm trying to calculate. Here is my maple sheet.

Download Maple-start.mw Maple-start.mw 

What i'm trying to achieve is a plot that would look a little like this:

hey,

i have a problem to get to the orthogonal point, but still there is a intersection and so should be as well a orthogonal point....

> S1 := proc (t) options operator, arrow; F[1](t)*m[1]*(1-F[2](t)) end proc;
> S2 := proc (t) options operator, arrow; F[2](t)*(m[2]+F[1](t)*m[1]) end proc;
> F[1] := proc (t) options operator, arrow; (1-exp(-(p[1]+q[1])*t))/(1+q[1]*exp(-(p[1]+q[1])*t)/p[1]) end proc;
> F[2] := proc (t) options operator, arrow; piecewise...

Hey everybody,

for some reason I dont get for the following problem any answer, with other data it worked, but not whit this!? and i know that there is a intersection point!!

> S1 := proc (t) options operator, arrow; F[1](t)*m[1]*(1-F[2](t)) end proc;
> S2 := proc (t) options operator, arrow; F[2](t)*(m[2]+F[1](t)*m[1]) end proc;
> F[1] := proc (t) options operator, arrow; (1-exp(-(p[1]+q[1])*t))/(1+q[1]*exp(-(p[1]+q[1])*t)/p[1]) end proc;

> m1 := 1000;
                              1000
> m2 := 250;
                              250
> m1A := .2;
          ...

In my class we need to know how we can double underline our answers and how we can use the ⇕ (DoubleUpDownArrow) in equations

We would be happy if you have the answers we are searching

Regards Henrk Sigsgaard

My question is related to this discussion on "querying events"

http://www.mapleprimes.com/questions/125273-Dsolve-Events-How-To-Control-For-A-Sign-Change#comment125426

I thought I might start a new thread.

The following loop is an illustration of the sort of thing I'd like to do with dsolve and events: I loop over a parameter of the "event" and extract information on the solution at different values of the parameter. Here is the code (successfully tested on Maple 15 / Standard / Windows)...

Hello everybody,

I try to find the intersection point for the following equation, but I didn't get any or just "warning, ..." where is the problem? and how can I solve this!?

> S1 := proc (t) options operator, arrow; F[1](t)*m[1]*(1-F[2](t)) end proc;
> S2 := proc (t) options operator, arrow; F[2](t)*(m[2]+F[1](t)*m[1]) end proc;
> F[1] := proc (t) options operator, arrow; (1-exp(-(p[1]+q[1])*t))/(1+q[1]*exp(-(p[1]+q[1])*t)/p[1]) end proc;

On the main page for the Rubi rule-based integrator, there is a table comparing results of Rubi against Maple and Mathematica.

On the face of it, the Maple results don't look so good. Maple is claimed as scoring about 82% correct on the author's example test suite. But only 42% of the suite gets an "optimal" result from Maple. The other 40% that Maple is claimed to get correct have results that are described as "Messy:

I've seen a few posts regarding implicit functions in Maple, but I've not seen any that can help my case...

(I should point out that I am new to Maple as well).

My function is h_c=[1/(2π*(√2)*a*f²)]*ln(h_c/4), and f=(a0-a)/a0

I have managed to get so far- Maple has accepted the function as an equation, and I want to plot h_c as a function of f, which, as you can see, varies according to a. I've tried...