For an arithmetic progression the sum of the first terms is given by

MATHEMATICS · Single correct · CBSE · Mathematics · Arithmetic Progressions · Arithmetic Progressions

Problem

For an arithmetic progression the sum of the first

n

terms is given by

S_n=3n^2+5n

. The general term

a_n

equals (a)

6n+5

(b)

6n+2

(c)

3n+5

(d)

6n-2