Respostas

2013-10-26T16:32:56-02:00
Hola.

(...,8,16,24,...,) 

a) razao
q = 16/8
q = 2

b) quinto termo
a_n = a_1*q^(n-1)
a_5 = a_1*2^(5-1)
a_5 = a_1 * 2^4
a_5 = 8*a_1

c) segundo termo
a_2 = a_1*q^(2-1)
a_2 = a_1*2¹
a_2 = 2*a_1

d) a1
a_1 = *a_2/2

e) a15
a_15 = a_1*q^(15-1)
a_15 = a_1*2(15-1)
a_15 = a_1*2^14   ou
a_15 = 16384*a_1