関連ワード:
if the sum of first n terms of an ap is 1 2 3n2 7n what is the sum of first n terms of an ap if the sum of first n terms of an ap is given by sn=3n2+2n find the 10th term if the sum of first n terms of an ap is given by sn=3n2+5n find the nth term if the sum of first n terms of an ap is given by sn=3n2-4n find the nth term
