Resposta :
olá!!
a1=1
q=3/1=3
n=10
sn=?
an=a1.q^n-1
a10=1.3^10-1
a10=3^9
a10=19683
Sn=a1.(q^n-1)/q-1
S10=1.(3^10-1)/q-1
S10=1.59049-1/3-1
S10=59048/2
S10=29524
Resposta 29524
PG
Calcule a soma dos des primeiros termos da pg (1,3,9)
olá!!
a1=1
q=3/1=3
n=10
sn=?
an=a1.q^n-1
a10=1.3^10-1
a10=3^9
a10=19683
Sn=a1.(q^n-1)/q-1
S10=1.(3^10-1)/q-1
S10=1.59049-1/3-1
S10=59048/2
S10=29524
Resposta 29524