Answers

2016-06-26T16:59:48+08:00
An=3+1n-1
an=1n+2

checking:
a(1)=1(1)+2
a1=3 which is the first term

a(2)=1(2)+2
a2=4 which is the 2nd term

a(3)=1(3)+2
a3=5 which is the 3rd term

so on and so for........
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