Find a number B such that the integral B So (2²+1-12²+1) de 3x converges. And then evaluate the integral using this B value. Problem 8. For each of the following sequence, find a reasonable formula for an that matches. the given terms: 1 1 1 1 1. {an}1 1 = { 3²5¹7²9² 5,...} 8-16 2. {an}{-3, 2, - 3'9' 27} 3. {an} {1, 0, -1, 0, 1, 0, -1,0,...} (Hint: Think about a trigonometric function.)