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 need Maple to evaluate something quite complicated with Groebner:-UnivariatePolynomial

When do I know that maple is at a point where it should be terminated instead of being left to run?

Is the output's length proportional to the amount of time used to calculate it?

RC_1D.msim

Dear Community

I'm a newbie in MapleSim trying to run a simple RC circuit simulation. Unfortunately I get the error message "system inconistent, simulation failed", but I have no clue why. I've uploded the model. I'm trying to withdraw a constant current of 0.1A from capacitance C₆. I do certainly something wrong. I would be grateful if you could have a look, and help.

Tx. in advance, best regards

One thing I have always found interesting is that exponential growth/decay
is not symmetrical hence:

100*(1+0.01)^2+100*(1-0.01)^2-200 = 0.0200

For example:

If you start with 100 and bet 1% and you win and then again bet 1% of your portfolio value
and you win again your portfolio value will be PW=100*(1+0.01)^2.

If you start with 100 and bet 1% and you lose and then again bet 1% of your portfolio value
and you lose again your portfolio value will be PL=100*(1-0.01)^2. ...

           Which Platonic solids can be obtained as the intersection of the 4d cube   -1<=x1<=1, -1<=x2<=1,-1<=x3<=1, -1<=x4<=1 and a 3d hyperspace A*x1+B*x2+C*x3+D*x4+E=0 (A^2+B^2+C^2+D^2<>0) in R^4? How to find it with Maple?

I'd like to increase the vertical space for the x-axis and horizontal space for the y-axis, between the tick marks on the axes and the labels (e.g. 1, 2, 3, etc.) of the tickmarks.

Is there a way to do this?

Thanks for any help!

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

Consider the following two functions, one of which is defined using a differential operator:

DO:=(f,x1,x2)->(sqrt(2)*x1+x2)*D[2](f)(x1,x2)-x2:

a:=(x1,x2,o)->1:
b:=(x1,x2,o)->simplify(DO((x1,x2)->a(x1,x2,o),x1,x2)):

b(x1,x2,o);

The Maple output is (D[2](f))(x1, x2)*sqrt(2)*x1+(D[2](f))(x1, x2)*x2-x2*D[2].

Why does this output contain the variable f, which should be substituted by a?