Matlab find an element in matrix

8 Lug 2015
2 Risposte
Risposta accettata
Aggiornato 8 Lug 2015
6 Visualizzazioni (30 giorni)

0 voti

hello, I have a matrix that has many elements and I would like to know if I have a specific element on it All my variables are symbolic at this point. I already used : [i,j] = find( x==q^2) the output: i =
[]
j =
[]
so whats this means? I Have it somewhere or not?

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 Risposta accettata

Azzi Abdelmalek
Azzi Abdelmalek il 8 Lug 2015
Modificato: Azzi Abdelmalek il 8 Lug 2015

2 voti

syms q
x=[2*q q^2 5*q]
[i,j] = find(x==q^2)
The result is
i =
1
j =
2

Più risposte (1)

bio lim
bio lim il 8 Lug 2015
Modificato: bio lim il 8 Lug 2015

1 voto

It means your matrix 'x' does not have an element that is equal to q^2.

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