Toán tính A= 1/2+1/4+1/8 + ……………..+ 1/512+1/1024 10/10/2021 By Amaya tính A= 1/2+1/4+1/8 + ……………..+ 1/512+1/1024
`A= 1/2+1/4+1/8 + ….+ 1/512+1/1024` `2A = 1 +1/2+1/4+ ….+ 1/512` `2A -A = (1 +1/2+1/4+ ……+ 1/512) – (1/2+1/4+1/8 + ….+ 1/512+1/1024)` `A = 1 – 1/1024` `A = 1023/1024` (Chúc bạn học tốt) Trả lời
A=1/2+1/4+1/8+…+1/512+1/1024 =1-1/2+1/2-1/4+1/4-1/8+….+1/256-1/512+1/512-1/1024 =1-1/1024 =1023/1024 Trả lời
`A= 1/2+1/4+1/8 + ….+ 1/512+1/1024`
`2A = 1 +1/2+1/4+ ….+ 1/512`
`2A -A = (1 +1/2+1/4+ ……+ 1/512) – (1/2+1/4+1/8 + ….+ 1/512+1/1024)`
`A = 1 – 1/1024`
`A = 1023/1024`
(Chúc bạn học tốt)
A=1/2+1/4+1/8+…+1/512+1/1024
=1-1/2+1/2-1/4+1/4-1/8+….+1/256-1/512+1/512-1/1024
=1-1/1024
=1023/1024