A student multiplied both sides of the inequality -1 3 x 4 by -3 and forgot to reverse the direction of the inequality symbol. What is the relation between the students incorrect solution set and the correct solution set? Is there any number in both the correct solution set and the students incorrect solution set? If so, what is it?

L32 - 5 To evaluate deﬁnite integrals using sums If c is any constant and if n is a positive integer, then ▯n 1. cai= i=1 ▯n 2. (a + b )= i i i=1 ▯n 3. (a − b )= i i i=1 ▯n 4. c = i=1 ▯n 5. i = i=1 ▯n 6. i = i=1 ▯n 7. i = i=1