creating matrix using existing matrix

given a matrix, how do you apply a function on every element to create a new matrix of the same size ?

[Wan Ji]

That's simple, e.g.

A = magic(5);
B = A.^2 + 3*A + 4;

Answer 1

[Image Analyst]

Try passing your matrix into your function, like

newM = yourFunction(M)

where you define your operations in the function. For example to cube it (element by element) and add 4:

function newM = yourFunction(M)
newM = M .^ 3 + 4;

[Tomer Marom]

Thank you ! I guessed it should work that way but I coudlnt understand how to define functions properly.

I also found that using Arrayfun does the job pretty well, Thanks