Question

if sn= 4n-n2 in an ap find the ap​

Answer 1

Answer:

S1=4(1)-(1)^2

=4-1

=3

therefore a1=3

S2=4(2)-(2)^2

=8-4

=4

a2=s2-s1

=4-3

=1

hence the AP is

3,1,-1....

Answer 2

Answer:

The ap of the given expression is 3,1,-1......