In: Math
Determine if the following series converge or diverge. If it converges, find the sum.
a. ∑n=(3^n+1)/(2n) (upper limit of sigma∞, lower limit is n=0)
b.∑n=(cosnπ)/(2) (upper limit of sigma∞ , lower limit is n= 1
c.∑n=(40n)/(2n−1)^2(2n+1)^2 (upper limit of sigma ∞ lower limit is n= 1
d.)∑n = 2/(10)^n (upper limit of sigma ∞ , lower limit of sigma n= 10)