returning differences between two matrices

I am relatively new to matlab (saw lots of people bashed for asking simple questions..) I need to compare two matrices, and to return true if they are the same. If they aren't identical, I need to have the code return all of the indeces that were not equal:

for instance, I have matrices A = [1,2,3,4,5] and B = [1,2,4,4,5]. I need the code to return either the index of the unequal variable or some other indicating factor.

Thanks!

Answer 1

[madhan ravi]

 Index =  find(A~=B)

Answer 2

[Matt J]

indicator = (A~=B);

Answer 3

[Paolo]

You can use setdiff:

[~,ia] = setdiff(A,B)