Question

If the sum of the first n term of an AP is 4n-n squre what is the first term (that is S1)? What is the sum of first two term ? What is second term ? Similarly, find the 3rd ,the 10th and the nth terms

Answer 1

1st term= 4×1-1
=3

2nd term= (4×2-2)-3
=3

3rd term= (4×3-3)-6
= 3

10th term= (4×10-10)-27
=3

SO THE AP IS 3,3,3.......

HOPE IT HELPS.....