Question

the first four Terms of the sequence if a*n eqaul to 2n+3​

Answer 1

Given :-

an = 2n + 3

To Find :-

The first four terms.

Solution :-

since, an = 2n + 3

⟹ a(1) = 2 × 1 + 3 = 5

a(2) = 2 × 2 + 3 = 7

a(3) = 2 × 3 + 3 = 9

a(4) = 2 × 4 + 3 = 11

common difference = 2

1st 4 terms are :- 5, 7, 9 & 11 respectively.