Question

If the sum of n terms of an



a.P. Is (pn+qn^2), where p and q are constants, find the commin difference

Answer 1

Answer:

Sn= pn+qn^2

let n=1

a1=p+q^2 or S1 =p+q^2

let n=2

s2=2p+2q^2

s1+d =s2

d=S2-S1

d= 2(p+q^2) - p+q^2

d=p+q^2