A = 1/2 + 1/4 + 1/8 + 1/16 + 1/32 + 1/64 + 1/128 + 1/256
Nkank giúp eim =(
#DONOTCOPY
A = 1/2 + 1/4 + 1/8 + 1/16 + 1/32 + 1/64 + 1/128 + 1/256 Nkank giúp eim =( #DONOTCOPY
By Reagan
By Reagan
A = 1/2 + 1/4 + 1/8 + 1/16 + 1/32 + 1/64 + 1/128 + 1/256
Nkank giúp eim =(
#DONOTCOPY
`A = 1/2 + 1/4 + 1/8 + 1/16 + 1/32 + 1/64 + 1/128 + 1/256`
`2 xx A = 2 xx (1/2 + 1/4 + 1/8 + 1/16 + 1/32 + 1/64 + 1/128 + 1/256)`
`2 xx A = 1 + 1/2 + 1/44 + 1/8 + 1/16 + 1/32 + 1/64 + 1/128`
`2 xx A – A = (1 + 1/2 + 1/44 + 1/8 + 1/16 + 1/32 + 1/64 + 1/128) – (1/2 + 1/4 + 1/8 + 1/16 + 1/32 + 1/64 + 1/128 + 1/256)`
`A = 1 + 1/2 + 1/44 + 1/8 + 1/16 + 1/32 + 1/64 + 1/128 – 1/2 – 1/4 – 1/8 – 1/16 – 1/32 – 1/64 – 1/128 – 1/256`
`A = 1 – 1/256`
`A = 255/256`
A=$\frac{1}{2}$ + $\frac{1}{4}$ + $\frac{1}{8}$ + $\frac{1}{16}$ + $\frac{1}{32}$ + $\frac{1}{64}$ + $\frac{1}{128}$ + $\frac{1}{256}$
2A = 1 + $\frac{1}{2}$ + $\frac{1}{4}$ + $\frac{1}{8}$ +… + $\frac{1}{128}$
2A – A = 1 – $\frac{1}{256}$
A = $\frac{255}{256}$
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