Question

1. Algebra of an arithmetic sequence is 2n+1 .Find its first term and common difference.​

Answer 1

Answer:

3 & 2.

Step-by-step explanation:

Answer 2

Answer:

3 and 2

Step-by-step explanation:

We may start with n = 1 being positive :)

Substitute n = 1, we get,

2 (1) + 1 = 2 + 1 = 3

Substitute n = 2, we get,

2 (2) + 1 = 4 + 1 = 5

Substitute n = 3, we get,

2 (3) + 1 = 6 + 1 = 7

From this we can see,

First term (a) = 3.

Common difference (d) = 2.

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