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=256+1/4(n-1)
=256+1/4n-1/4
=255 3/4 + 1/4n
Tolong sambil di review
a=256
r=64/256=1/4
Un=ar^(n-1)
Un=256. 1/4^(n-1)
Un=2^8.2^-2^(n-1)
Un=2^8.2^(-2n+2)
Un=2^(-2n+10) ---> Rumus suku ke n