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What is the recursive formula for this geometric sequence? 2,-10,50,-250,...

What is the recursive formula for this geometric sequence? 2,-10,50,-250,...-example-1
User Zhao Yi
by
4.9k points

2 Answers

3 votes

Answer:

The correct answer is D

Explanation:

2 and -5

User Mcsilvio
by
5.0k points
5 votes

Answer:

an = an-1 * (-5)

a1= 2

Explanation:

The recursive formula is

an = an-1 * r

a1= initial term

where a1 is the initial term and r is the common ratio

a1 =2 or the starting term

r = second term / first term = -10/2 = -5

an = an-1 * (-5)

a1= 2

User Sorin C
by
5.0k points
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