Question

Select the function that represents a geometric sequence?

Answer 1

D. A(n) = P(1 + i)^n – 1, where n is a positive integer

Answer 2

Answer:

The correct option is A.

Step-by-step explanation:

A geometric sequence is defined as

$A(n)=ar^{n-1}$

Where, a is the first term of the sequence, r is the common ratio and n is number of term. So, n can not be negative or zero.

In option A, the given sequence is

$A(n)=P(1+i)^{n-1}$

Where, n is positive integers.

Here the first term is P and (1+i) is the common ratio. So, this sequence is geometric sequence.

Therefore the correct option is A.