5. Find the values of j=11002 and j=1100(1)j. 6. Let A=[102134] and B=102213. Find AB and BA. Are they equal? 7. Let A=101011110 and B=001110010. Find the join, meet, and Boolean product of these two zero-one matrices. 8. Find the solution to each of these recurrence relations with the given initial conditions. Use an iterative approach such as that used in Example 10. a) an=an1,a0=5 b) an=an1+3,a0=1 c) an=an1n,a0=4 d) an=2an13,a0=1 e) an=(n+1)an1,a0=2 () an=2nan1,a0=3 g) an=an1+n1,a0=7 9. Show that the set Z+Z+is countable