Please help me with this sequence equation

2 vues (au cours des 30 derniers jours)
arsalan mehrabi
arsalan mehrabi le 19 Déc 2020
Commenté : Alan Stevens le 19 Déc 2020
Hi I want to solve a sequence equation:
t(i)^(n+1)=e(t(i-1)^n+t(i+1)^n)
for i=2:1:5 and n=1:1:10 and n is not power.
so I wrote this:
for n = 1 :1: 10
for i = 2 :1: 5
t(1,i)=100
t(n+1,i) = 0.46875*t(n,i-1) + 0.0625t(n,i) + 0.46875(n,i+1);
end
end
What is the problem?
  2 commentaires
Image Analyst
Image Analyst le 19 Déc 2020
Modifié(e) : Image Analyst le 19 Déc 2020
Is e in that equation exp()? Like 2.718281828? So you want e to the power "(t(i-1)^n+t(i+1)^n)"?
And what's up with the third term? 0.46875 is a scalar and cannot have matrix indexes.
arsalan mehrabi
arsalan mehrabi le 19 Déc 2020
yes

Connectez-vous pour commenter.

Réponses (1)

Alan Stevens
Alan Stevens le 19 Déc 2020
Modifié(e) : Alan Stevens le 19 Déc 2020
Firstly
t(n+1,i) = 0.46875*t(n,i-1)+0.0625t(n,i)+0.46875(n,i+1);
should probably be
t(n+1,i) = 0.46875*t(n,i-1)+0.0625*t(n,i)+0.46875*t(n,i+1);
Secondly, you want to use t(n,i+1), before you've determined it. (When n = 1, t(2,3) doesn't yet exist so you can't calculate t(2,2)).
  2 commentaires
arsalan mehrabi
arsalan mehrabi le 19 Déc 2020
Modifié(e) : arsalan mehrabi le 19 Déc 2020
so how can i do that ?
Alan Stevens
Alan Stevens le 19 Déc 2020
I don't know! Looks like you need more initial information.

Connectez-vous pour commenter.

Catégories

En savoir plus sur Mathematics dans Help Center et File Exchange

Produits

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by