Determine if the following series converge or diverge. If it converges, find the sum. a. ?n=(3^n+1)/(2n) (upper...

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Determine if the following series converge or diverge. If itconverges, find the sum.

a. ?n=(3^n+1)/(2n) (upper limit of sigma?, lower limit isn=0)

b.?n=(cosn?)/(2) (upper limit of sigma? , lower limit is n=1

c.?n=(40n)/(2n?1)^2(2n+1)^2 (upper limit of sigma ? lower limitis n= 1

d.)?n = 2/(10)^n (upper limit of sigma ? , lower limit of sigman= 10)

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