Matlab find an element in matrix

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Nadia Bica
Nadia Bica 2015-7-8
编辑： bio lim 2015-7-8
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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Azzi Abdelmalek
Azzi Abdelmalek 2015-7-8
编辑：Azzi Abdelmalek 2015-7-8
syms q
x=[2*q q^2 5*q]
[i,j] = find(x==q^2)
The result is
i =
1
j =
2

更多回答（1 个）

bio lim
bio lim 2015-7-8
编辑：bio lim 2015-7-8
It means your matrix 'x' does not have an element that is equal to q^2.

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