hannacostley99 hannacostley99

12-05-2017
Mathematics

contestada

A geometric sequence is defined recursively by an = 20an-1. The first term of the sequence is 0.01. Which of the following is the explicit formula for the nth term of the sequence?
A. 0.0120n+1
B. 0.0120n
C. 200.01n-1
D. 0.0120n-1
E. 20 *0.01n

Respuesta :

ghanami ghanami

13-05-2017

hello :
hello :
the nth term is : An=A1×r^(n-1)
The first term of the sequence is 0.01
r =An/an-1 =20
An =0.01(20)^n-1...(answer :D )

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