Resposta:
n=?
A1=4
q= 2
Sn=172
Sn= a1•(q^n-1)/q-1
172= 4(2^n -1)/2-1
172/4= 2^n-1/1
43=2^n-1
43+1= 2^n
44= 2^n
2²×11=2^n
2^n= 2²×11
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Resposta:
n=?
A1=4
q= 2
Sn=172
Sn= a1•(q^n-1)/q-1
172= 4(2^n -1)/2-1
172/4= 2^n-1/1
43=2^n-1
43+1= 2^n
44= 2^n
2²×11=2^n
2^n= 2²×11