What are the first four terms of the geometric sequence an=2 an-1 and a1=3

3, 6, 12, 24

Step-by-step explanation:

This is a recursive formula which allows the next term in a sequence to be found from the previous term in the sequence

Given

= 2 with a₁ = 3, then

a₂ = 2 × a₁ = 2 × 3 = 6

a₃ = 2 × a₂ = 2 × 6 = 12

a₄ = 2 × a₃ = 2 × 12 = 24

Thus the first 4 terms are 3, 6, 12, 24

B.

Step-by-step explanation:

We are given that

We have to find the first four terms of G.P

Substitute n=2

Substitute n=3

Substitute n=4

Hence, the first four terms of G.P are  given by

Option B is true.

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