Ax=b

a) calculate the nullspace Null(A) and

b) give the general solution of the system Ax=b or state that the system inconsistent.

For b) write in the form x= p+y where p is a particular solution and y ranges across Null (A)

A=1 1 0 2

2 1 1 -2

2 2 2 1

b= 12

0

14