Answers

2014-05-30T15:33:30+05:30
 A Δ B = (A-B) U (B - A)
As it is given 
A = {2, 3, 5, 7, 11} and B = {5, 7, 9, 11, 13}, 
we get (A-B) = {2, 3}
(B-A) = {9, 13}
 A Δ B = (A-B) U (B - A) = {2, 3}U{9,13}  = {2,3,9,13}
0
2014-05-31T17:48:55+05:30
A Δ B = (A-B) U (B-A)
A-B = {2,3}
B-A = {9,13}
A Δ B=(A-B) U (B - A) = {2,3,9,13}
0