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Question
is the Consider the expression an = 2n − 1, AP .
Solution
Consider the expression an = 2n − 1,
For n = 1, a1 = 2(1) − 1 = 1
For n = 2, a2 = 2(2) − 1 = 3
For n = 3, a3 = 2(3) − 1 = 5
For n = 4, a4 = 2(4) − 1 = 7
The first four terms are 1, 3, 5, 7.
The difference between each consecutive term is 2.
Hence this is an A.P
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