1-1/2-1/4-1/8-1/16-1/32-1/64简便计算
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![1-1/2-1/4-1/8-1/16-1/32-1/64简便计算](/uploads/image/z/242724-12-4.jpg?t=1-1%2F2-1%2F4-1%2F8-1%2F16-1%2F32-1%2F64%E7%AE%80%E4%BE%BF%E8%AE%A1%E7%AE%97)
1-1/2-1/4-1/8-1/16-1/32-1/64简便计算
1-1/2-1/4-1/8-1/16-1/32-1/64简便计算
1-1/2-1/4-1/8-1/16-1/32-1/64简便计算
1-1/2-1/4-1/8-1/16-1/32-1/64
=1-(1/2+1/4+1/8+1/16+1/32+1/64)
=1-(32/64+16/64+8/64+4/64+2/64+1/64)
=1-63/64
=1/64
1-1/2-1/4-1/8-1/16-1/32-1/64
=1-(1/2+1/4+1/8+1/16+1/32+1/64)
=1-(32/64+16/64+8/64+4/64+2/64+1/64)
=1-63/64
=1/64
提出一个1/64
1/64*(64-32-16-8-4-2-1)
=1/64*1
=1/64
1-1/2-1/4-1/8-1/16-1/32-1/64
=1-(1/2+1/4+1/8+1/16+1/32+1/62)
=1-{【1/2(1-1/2的六次方)】/(1-1/2)}
=1-1+1/64
1/64
后面的用等比数列求和公式加起来打包一起减。
1-1/2-1/4-1/8-1/16-1/32-1/64
=1-(1/2+1/4+1/8+1/16+1/32+1/62)
=1-{【1/2(1-1/2的六次方)】/(1-1/2)}
=1-1+1/64
1/64
mmm
错误:(没简便)1-1/2-1/4-1/8-1/16-1/32-1/64
=1-(1/2+1/4+1/8+1/16+1/32+1/64)
=1-(32/64+16/64+8/64+4/64+2/64+1/64)
=1-63/64
=1/64
正确:1-1/2-1/4-1/8-1/16-1/32-1/64
=1-(1/2+1/4+1/8+1/16+1/...
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错误:(没简便)1-1/2-1/4-1/8-1/16-1/32-1/64
=1-(1/2+1/4+1/8+1/16+1/32+1/64)
=1-(32/64+16/64+8/64+4/64+2/64+1/64)
=1-63/64
=1/64
正确:1-1/2-1/4-1/8-1/16-1/32-1/64
=1-(1/2+1/4+1/8+1/16+1/32+1/62)
=1-{【1/2(1-1/2的六次方)】/(1-1/2)}
=1-1+1/64
1/64
后面的用等比数列求和公式加起来打包一起减。
收起