Maple Questions and Posts

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How to simplify


to b=c ?


I try to simulate the sum of two dice, and display the frequencies of the apparitions (in order 2,3,..12). Is my approach good? can generalize the approch to several dices?

Thanks for your help


Hi every body:

How can I solve this equation with Trapezoidal Rule in Maple? 

u(x) = 1+int(x*t*u(t), t = 0 .. 1)


I have a procedure that changes the value of an input variable quite unexpectdly. Can anyone explain why? I have a very simplified example of this below.

switch := proc (V::Vector)
description "This procedure is supposed to take a Vector V and switch entries 1 and 2";
local W,a,b;
W:= V;
a:= W[1];
b:= W[2];
W[1 ] := b;  
W[2] :=a;
end proc;

I have omitted the output for brevity's sake but all works well as expected.

returns V2 not V1. Why is the procedure changing V1?

The problem occurs with matrices but not with lists.




Hello there,

for academic purposes I need to solve a pretty complex and substantial non-linear equation system. Here you can have a look at the equations:

The MAPLE Statement "fsolve" is not working here, though there is no error message. I know, that I can provide a framework for each variable to help fsolve find a solution. But for my usage this is not an appropriate task, since I'd like to do some simulations and variations with the input parameters.

Is there a way, so I can find a solution to my equation system?


It would be possible to make some adjustments to my equations, e.g. reducing the complexity of the equations and increasing the number of equations at the same time, if needed.

I would appreciate any advice!

Thanks in advance!

if V=(u(x,y,t),v(x,y,t),0) is vector field ( x,y space, t is time), how can find gradient of V in maple ?

iqt + aqxy + ibq (qq*x − q*qx) = 0. write this equation in maple

In the worksheet below I produce a sequence of frames for an animation by distributing the task into several threads.  The result has strange artifacts as we see in the sample.  The artifacts vary randomly from run to run.  Am I doing something wrong?



`Maple 2018.2, X86 64 LINUX, Oct 23 2018, Build ID 1356656`



Draw a simple picture:

frame := proc(t)
  plot(x^2 + t, x=-1..1, title=typeset("t = %1", t));
end proc:

Generate a sequence of pictures:

frames := Threads:-Seq(frame(t), t=0..1, 0.05):

Animate the sequence:

plots:-display([frames], insequence);


Hi all,

I have a data set (see .txt file attached) to be fit to the model function A*sin(B*x+C)+D. Calculating the parameters A, B, C, and D is easy enough, but is there a way to have Maple return their standard errors?



I can’t perform the last command (GridPlot) on my worksheet



I am new to Maple and have some problems with fonts in Maple's forms. How can I increase the size of the monospaced font? (see the screenshot).

How would I go about getting true or false returned on these propositions?
I have tried just about every eval and various syntax methods, but nothing has worked so far.

I know most can easilly be done by hand/thinking, but I'm sure Maple should have a way to do this as well.

∀n∈Z:2n>n+2   ,   ∃n∈Z:2|(3n+1)    ,   ∃k∈Z:∀n∈Z:n=kn   ,   ∃k∈Z:∀n∈Z:2|(n+k)   ,   ∀n∈Z:∀k∈Z:(n>k∨k≥n)


How to view all  statistical bank of data in Maple ? ( for example , Iris data)


I have a hard to understand quotient of multivariate polynomials- my intuition is that the denominator nearly divides the numerator - and it could be rewritten as:

remainder+(much simpler numerator)/denominator

as far as I can see the functions quo and rem aren't designed for this - but I'm certain that people in the maple community must have overcome this kind of problem before

I am trying to run maple program in a workstation using 20-40 processor for a job. I have no idea how to do this. Thank you.

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