2n-3 is the term of an ap

Asked by  | 1st Feb, 2012, 04:49: PM

Expert Answer:

Let an = 2n - 3
When n = 1, a1 = 2 - 3 = -1
When n = 2, a2 = 4 - 3 = 1
When n = 3, a3 = 6 - 3 = 3
When n = 4, a4 = 8 - 3 = 5
and so on
 
It can be seen that the sequence -1, 1, 3, 5, ... is an AP with common difference 2 and first term -1.
 
Thus, 2n - 3 is a term of an AP.

Answered by  | 1st Feb, 2012, 05:43: PM

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