Jawaban:
a=U1=4
U2=8
U3=16
r=u3/u2
=16/8
=2
Sn=a(rⁿ-1)/(r-1)
S9=4(2⁹-1)/(2-1)
S9=4(512-1)/1
S9=4(511)
S9=2.044
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Jawaban:
a=U1=4
U2=8
U3=16
r=u3/u2
=16/8
=2
Sn=a(rⁿ-1)/(r-1)
S9=4(2⁹-1)/(2-1)
S9=4(512-1)/1
S9=4(511)
S9=2.044