comparing the missing value

I have a vetor

a= [3 4 5 1 9 2 0]

b= [4 0 5 9 1 2]

b matrix miss value

compare two matrix..

The missing value added to the b from a

Answer 1

[pietro]

Here one solution:

a= [3 4 5 1 9 2 0];

b= [4 0 5 9 1 2];

b=b(find(ismember(a,intersect(a,b))==0))

[Anusha]

Its not working

Answer 2

[Azzi Abdelmalek]

a= [3 4 5 1 9 2 0]
b= [4 0 5 9 1 2]
out=setdiff(a,b)