Answers

2016-03-05T14:16:24+05:30
Tn = 2n + 1
=> First term (n = 1)
First term,T = 2(1) + 1
= 2 + 1
= 3
=> Nth term = n/2(T+Tn)
. =n/2(3+2n+1)
. =n/2(2n+4)
. =n²+2n
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2016-03-05T14:56:23+05:30
Tn=2n+1
=I st term(n=1)
I st termT=2(1)+1
=2+1=3
N th term=n/2(T+Tn)
=n/2(3+2n+1)
n/2(2n+4)
  2
n  +2n
plz give tnx

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