Find the respective terms for the following APs.
a1 = 5, a4 = 9
, find a2, a3
Given that a1 = 5 & a4 = 9.5
a4 = a1 + (4-1)d
9.5 = a1 + 3d
Substituting a1 in above equation
9.5 = 5 + 3d
4.5 = 3d
d = 1.5
now, a2 = a1 + (2-1)d
= 5 + 1.5
= 6.5
a3 = a1 + (3-1)d
= 5 + 2× 1.5
= 8
3