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Solve using Maple:Twenty-one pirates are dividing their horde of gold dubloons. Since they are a
democratic outfit, they first try to divide the coins evenly, but they find there are 19
coins left over. The “discussion” about how to divide the remaining coins results in
only 16 pirates still needing to divide the horde (the remaining five went to a place
where you can’t bring money or anything else with you). The redivision among
16 pirates leaves 1 coin left over, and three of the pirates make a grab for it. These

I’ve developed a procedure in the Maple as follows:

How to plot...

November 12 2008 kris2099 180

Hi all.  How do I plot sin(x) such that only Pi/2, Pi/, 3Pi/2 and 2Pi appear on the x axis and the values 0, -1 and 1 appear on the y-axis and the axes x and y appear at the appropriate axes?





Very simple question


I want to plot the function y = f(x) but I want the axes to appear rotated (as I show in the picture)

HOw can i do this??? 


Thanks a lot!




If we run the below code we will get a plot of a pure unit root and the serial correlation parameter for a pure unit root

My question is why do we have such a large amount of serial correlation in a process that is supposed to be random?

I ran a simulation and found that the average serial correlation for a 100 pure unit roots was 0.941

It does not seam I doing something wrong here?

I thought the basic definition of a random variable was serial correlation=zero.


Complex conjugate...

November 11 2008 pie 8

Hello everyone,

I can't succeed in obtaining the complex conjugate of a function like this:

 suu:=x->( e^(-Iq(x)b)*(cosh(q(x)*b)) )^2 - I*sinh(q(x)*b) * e^(-4iq(x)b)

where q(x) is:


and m, V and h are respectively mass of electron, 1 eV and Plank constant /2 pi.

what I need is |suu(x)|^2 (where the * stands for product and not for complex conjugate!) but succeding in obtaining the complex conjugate of the function wold be enough.


Can you help me?


I am using Maple11 for an Adv. Computer Applications Lab.  I am being directed to use the "implicitplot" function to plot a polynomial, and also plot a previous function that used the "spline" command to plot it on the same graph. 

Can someone please offer a suggestion?

Also, for the polynomial. how do I find all "x,y pairs? " I used the "solve" command to evaluate for 'x' and then 'y'. 

Is this correct?

3D Implicit Plots...

November 11 2008 Adnan Zuberi 6
0 0
Hello there,   the attached worksheet gives several examples of how to create implicit plots without commands and with commands.  

non zero value for c...

November 11 2008 a5mcdonald 4


in maple how do i determine the non zero value of c so the function u(x,t)=c((exp(x-4t)+exp(4t-x))) also satisfies (∂u/∂t)+u(∂u/∂x)+(∂u/∂x)=0
this is my first class using maple so i need as much help as possible
thank you


I am making a maplet that guides a user through crafting a Taylor series equivalent of a function. Obviously this involves finding a formula for the nth derivative of the function. Can Maple calculate this?


November 10 2008 Kaz 20

I need help with a coursework question. Would be greatful if anyone could help!
the question is: solve this x[i-1] + i*x[i] + x[i+1] = i where i=1,2,...n and x[0] = 0. Give your answer in decimals.

wat method would you use to solve these equations? the code I have put in is:

for i from 1 to 3 do:
  eq[i]:=x[i-1] + i*x[i] + x[i+1] = i
sol:fsolve({eqns});   assign(sol);

am i on the right path? is there anything i am doing wrong? if so, what is it?

I am multiplying an n x n matrix by an n x 1 matrix of unknowns, y(xi), to get the result of my particular solution.  How do I create an n x n matrix with a 3 term diagonal?  For example:

b   c   0   0   0   0

a   b   c   0   0   0

0   a   b   c   0   0

0   0   a   b   c   0

What is -0 all about?...

November 10 2008 George Kinnear 60
0 3
On top of all the serious problems in producing questions for Maple TA, we have to contend with silly bugs like this: $a=0; $d=0; $b=$a+$d; $b is given the value -0. This looks ugly and may cause confusion if it's used in a question. I've got round this by setting $b=int($a+$d). Is there some reason why -0 is a valid result for 0+0, or is this just sloppy programming?

Hi all,

can someone show me the steps of how to do it? one of my points is a decimal, do i need to revert it to a whole number?

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