1. (9 points) Determine whether the series -2) M is convergent or divergent. If it's convergent, find its sum. 2. (6 points) Determine whether the series n' +1 2n2 +1 is convergent or divergent. If it's convergent, find its sum. 3. (5 points) Determine whether the sequence a, =- n' -2n converges or diverges. If it converges, find the limit