How to do set subtraction

I have two array a=[1,2,3] and b=[2,3,4,5]

I need a array c=b\a. Here \ is the set subtract operation. result is as follows:

i.e.c=[4,5]

How to do that in matlab. Thanks in advance.

Answer 1

[Matt Fig]

a = 1:3;
b = 2:5;  
c = setdiff(b,a)

Answer 2

[Vishal Rane]

Use

c = b(~ismember(b,a))

although there might be more simpler way to do this.