I am a Maple 12 user (under window 7) and now trying to solve a system of equations with PHCpack. Somehow it does not work. I do follow steps provided in http://www.math.uic.edu/~jan/. The error message shows up as follows;

> restart;

> setPHCloc("C:\\phcPACK");

> f := [x*2 - x*y + 2, x^2 + y^2 - 1]:

Please see attachment.

Suppose particle A moves in counter-clockwise circular motion about the origin with radius 3,

 completing one revolution every time interval.  Particle B is in counter-clockwise circular 

orbit  about particle A with radius 1/2, completing 12 revolutions every time interval.  Find

 a  possible  parameterization of the path of particle B for one complete time interval.  

Animate your solution.  

I am stumped as to why LinearSolve and BackwardSubstitute(GaussianElimination) are giving me different answers (the latter gives the correct answer).  Here's what my maple session looks like:

Any input would be appreciated.  Thanks.

1. can it have simple solution for convert(taylor(Qx*exp(z), z=0,5), ratpoly); as my solution have     hypergeom([-1/2i, ....?

    for example where Qx = x/m, if m is also increasing from 0 to 5 by one in each term

    How to write these command?

    is it sum(Qx*z^m/m!, m=0..infinity); but convert this result to ratpoly result in error, if exp, it will have summation,

To answer this question you need to create a Maple function using Maple's arrow (->) notation.

Your function should take a Maple list of real numbers as its input and return the smallest cosine from that list.

Enter your function in the box below.

Your Answer: op(1,sort(map(cos,x)))

Comment: No solution is given for this question.

Can anyone tell me how my answer is incorrect, or more importantly, what the correct answer is?

I'm trying to use maple to solve for the first 5 terms for a sequence, and each term is the term before it with some new value added to it, I'm trying to define this function correctly in maple and cannot find a way to do it. I need to have it in a form where it can solve for any term so I need to get it into a general form solvable for any value.


Basically the sequence I'm trying for maple to use correctly is this:

A_n= (sqrt(3)/4)+((sqrt(3)/4)(2/3)

erec :=  mu Q(n + 1) - (n + mu) Q(n) + n Q(n - 1);
with(gfun);
opoly := rectodiffeq(erec, Q(n), f(z));

Error, (in gfun:-rectodiffeq) invalid input: getname expects its 1st argument, yofz, to be of type function(name), but received (z(z)*mu(z)*_C[0](z)-mu(z)*_C[1](z)*z(z)-mu(z)*_C[0](z))/(z(z)*mu(z)-mu(z))

I would like to set an axis to logarithmic scale, after having loaded the Units[Standard] package.

The command is:

plot3d( function(input), x=-1..1, y=1..1, axis[3]=[mode = log] )

Confoundingly, the error is:

Error, (in plot3d) expecting option mode to be of type identical(linear, log)
 but received Units:-Standard:-log

So the problem is that with(Units[Standard]) hijacks all occurences of log and replaces them with...

Hey there

I got a little problem.

I would like to have the positive numbers on the y-axis to point downworth, and of couse the negative going upworth. Is that even possible? 

Hope you can help.

Thanks

hi all,

To create an observability grammian I have to integrate a matrix with some equations that are difficult to integrate due to multiple time dependent variables. The simplest expression in the matrix is:

z₁^2 * sin( z₅ * t)^2          (1)

where z1 and z5 are from a state space model with 5 states and are given by:

z₁dot = z_{2     ...}

I am having trouble extracting one part of a return of a solve.

> relatie := CD^2 = (AB+BC*cos(beta)+AD*sin(alpha))^2+(BC*sin(beta)-AD*cos(alpha))^2;
> vergelijking := solve(relatie, beta);

the solve seems to return 4 expresions and the data type is exprseq. I only need the first expresion (till the first comma) I tried using temp:=vergelijking[1] but that still contains 2 parts separated by a comma.

Has anyone gotten Wigner Rotation to work in Maple. My implementation based on a formula derived in Edmonds, which is equivalent to whatever is on wikipedia, just isn't working. And I don't know where the problem lies. I know for sure that my z axis rotaition works. But I guess my Y-axis rotation is failing for some reason. I'm sure that it matches the formula. I do a Z-Y-Z rotation, so the resulting rotation matrix is real. 

Ideas? Thanks fo any help you can provide!

Why does it give a error? I don't get it and I'm frustrated! Thanks a lot!

> restart; Digits := 4;
Verplaatsing (s) achteras naar hoek alpha
                                  


> AG := 382.5; AB := 45; BC := 369; CE := 117; EF := 108; GE := 135; CD := 238; FG := 36; BG := 346.5; DF := 222.8;
> rc := Vector(2, {(1) = 0, (2) = 0});
                       Vector[column](%id = 213058548)
> rcb := Vector(2, {(1) = BC*cos(alpha(t...

Hi Colleagues

I made a worksheet program in Maple 12 then i want to print it as a PDF file but i want to add header and page numbers. How can i do that??????

Hey there

Is it possible to to view A4 paper when you work in maple instead off the "endlessly big" sheet you work in as standard?

My problem is that when i work in maple, it look different when i print it too an A4 sheet.

Looking forward to hear from you :)

Rune Eriksen