Question

The common difference of the ap, whose general term an=2n+1 is

Answer 1

Answer:

2

Step-by-step explanation:

2n+1

every value of n is multiplied by 2 so c d is 2

Answer 2

an = 2n + 1

___________

Put n = 1

⇒a1 = 2(1) + 1

⇒a1 = 2 + 1

⇒a1 = 3

Put n = 2

⇒a2 = 2(2) +1

⇒a2 = 4 + 1

⇒a2 = 5

⇒d = a2 - a1

⇒d = 5 - 3

⇒d = 2