Same elements in cells on diag of a matrix

Hello there,

I'm using syms and I have several polynoms in each of my mtrix cells,

I want to find out what are the common elements on the polynoms that on the diagonal of the matrix.

For example, the following 2x2 matrix:

A=[
1+w+w^2,    2w+3;
3w+5,        1-w+w^2;
]

I want to get the following polinom: 1+w^2.

In future steps I'll use cos and sin so please consider it.

Answer 1

[SaiDileep Kola]

Hi,

Although there is no direct way I could see for the task, it can be achieved through a little tedious process by extracting children of each polynomial using "children" function and then check for the common factors using "isAlways" as used here.