I am trying to simplify a large expression using simplify(), but it takes too long and I eventually run out of processing power after a few days. Is there any way I could get similar results with an alternative function?

Any help is appreciated.

Hi,

I am doing some work on differential equations, and I am checking the solutions.  Whether the solution is correct or not depends on whether or not a real number plus zero*i is a real number or an imaginary number.  I want to test how maple handles this by plotting sin(x)i. 

This is intended to be a complex plot.  I am expecting a series of points along the real axis where sin(x) is zero.  Can anyone help me with this?

Hi.

I have to make a picture Polynomiograph from metrics such as

m:= Matrix([[1, 2, 3], [4, 5, 6]])

By assigning each number a color as follows.

1 = aquamarine

2 = blue

3 = brown

4 = coral

5 = cyan

6 = black

How should I write the code?

Hi,

i m looking for procedure ( or command) in Maple language to calculate the principal measure of my angle Ra ?

Thanks a lot for ideas 

PrincipalMeasure.mw

Maple 2021.1 screen shot: property box too small to select properties

how it should look like

How do I get it back to normal?

Thank you

I am using the RandomGraph() command from the GraphTheory[RandomGraphs] package to generate many random graphs of certain order (n) and size. The default labeling for vertices is based on the set {1,2,3,4,...n}. Is there a way to change the default labeling so that the vertices are labeled {v₁, v₂,...,v_n}? I know how define the vertex labels for a predetermined graph, but I'm looking for a way to automatically apply these labels to a randomly generated graph. Thanks!

i have two equations;i.g eq1 and eq2. i want to factor psi(x,t) in eq2 using linear differential operators and substitute it in equation 1. could anyone help?

Download Dd.mw

Hi,

I m looking for a simple way to generate random integers ( with step excuding 0) instead of through Maple TA package ( see my file) ?

Ideas? Thanks

RandomIntegerSteps.mw

I'm looking at a small system of differential equations. It can be readily solved numerically, but an attempt for an analytical solution spits out a "division by zero"... Is it obvious to anyone why that would be? or what the issue is?

(mathematica does spit out a solution in terms of inverse of elliptic  functions)

thanks!

Download div_by_zero.mw

Hi Mapleprimes,

I am having difficulties trying to evaluate the following integral

int(-(C__A*K + 1)/(k*C__A), C__A = C__A .. C__A0, numeric = false)

Where the limits are undefined(unknown) symbolic limits, C_A0 is intial concentration, CA is actual concentration. Maple returns the same equation when I try it. I haven't loaded any packages.

I could of course just evaluate the indefinite version and manually substitute but I think that defeats the purpose of using maple.

Any thoughts will be greatly appreciated.

Maple 2020.1

I know that, the function f(x) = (5x^2 + 8x+ 2)/(2x^2 + 6x + 5) sastifying the conditions:

1. The solutions of the f'(x)=0 are -2 and -1;
2. f(-2) = 6 and f(-1) = -1.

How can I find six integer numbers a, b, c, d, e, m from 1 to 10 so that the function
f(x) = (a*x^2 + b*x + c)/(d*x^2 + e*x + m)
so that the equation f'(x)= 0 has two integer solutions x1, x2 and f(x1); f(x2) are also  two integer numbers?

     I asked a similar question a few weeks ago and received a most helpful response, but unfortunately I had inaccurately transcribed thespecified form of that double integral from a file presented in Microsoft Word.  I shall be most grateful for the numerical evaluation of this difficult double integral here presented in unambiguous and correct Maple definition, for cases n=0 and n=1.

i1 := Int(exp(-(k^2*sinh(s)^2/(gam-I*k*cosh(s)) + I*k*(1-cosh(s)))*v)*Hypergeom([I/k],[1],I*k*v)*v^n, v=0..R/2);

Jn := 1/R*Int(sinh(s)*coth(s/2)^(2*I/k)/(gam-I*k*cosh(s))^5*i1, s=0..smax);

smax := 20;  R := 1680;  k := 1/4;  gam := 1/2;

The preceding response seemed to have several Maple statements that were not actually involved in the solution, making it difficult to follow the applied scheme of that solution.

      Thanks in advance,     John Ogilvie

I'm getting a strange error today when trying to save a file on the network. Rebootet machine, no change.

Any hints?

Hello!

I am trying to integrate this function numerically from x=0... 1, by using int and evalf(Int) but maple cannot handle it. Is there another kind of numerical integration?

(2*x-1)^2*(2*n+(5*(2*x-1))*(x-1))*(2*n-5+5*x)*ln(1-(5*(1-x))*x/n)/((1-x)^2*(-2*n-(15*(1-x))*x))

Are there another kind of procedures to do numerical integration?

Hello,

I wonder if it is possible to define my own relationships so they can be used later with simplify.

Actually, I would like Maple to simplify the following expression

but I haven't been able to do so. Therefore, I was wondering if it is possible to define

and use this relation in further simplification operations.

Thank you in advance,