## 55 Reputation

1 years, 247 days

## Combine two plots...

Maple

Hi!

I am trying to combine the plot in cobweb-diagram.mw (sorry for the messed up axes, you can adjust it in the 'axes properties') with the plot in modèle_graphes.mw. I've tried these two things : test1.mw and test2.mw, but I can't make it work.

## solve command with assumptions...

Maple 2020

Hello :-)

I am trying to solve a third degree polynomial with assumptions, but I do not understand Maple's answers.

I think I am not doing it ''correctly''.

Can someone please help me understand why Maple gives me these answers and how I could get the ones that Maple gives me when I fix a value for my parameter ? Please have a look at the attached file : test1.mw

I hope my questions are clear, please don't hesitate if you need clarifications.

## Can you get an exact value out of RootOf...

Maple

Hi everyone,

There is an attached file below.

I am trying to solve the following equation and I get a numerical value with RootOf.

Do you know if it is possible to get the exact solution with RootOf? Do you know another method? In general, do you know a way to determine if Maple is able to get the exact value or not?

I know it is not always possible to get exact solutions, but maybe there is a way to do it for this polynomial... ? :--)

I hope my questions are clear. Thank you very much for your help and advices.

test.mw

## Trying to solve an ODE, but Maple return...

Maple

Hi,

I'm trying to solve an ODE. I don't understand why Maple returns nothing when I run this code.

with(ODETools):
dsolve(diff(y(x), x) = (6*y(x)^5 - 3*y(x)*x^2 - 20*y(x)^3*x)/(-4*x^3 + 30*y(x)^2*x^2 - 30*y(x)^4 + 7*y(x)^6), y(x));

I don't have any error messages, it just doesn't return anything.

## How do I solve the system Pq = q where P...

Maple

First, I want to find the set of solutions of this system and then find the steady state vector.

I know that I can find an approximation of the steady state vector ''directly'' if I calculate Pfor big k values (one column of Pk will give me an approximation), but it's not what I want to do. I need the complete set of solutions with a free parameter.

LinearSolve() doesn't give me the set of solutions. See the picture below. Here Q is the transition matrix.

I hope my question is clear (:

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