1/2-(1/2-1/4)-(1/4-1/8)-…-(1/8192-1/16384)

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1/2-(1/2-1/4)-(1/4-1/8)-…-(1/8192-1/16384)1/2-(1/2-1/4)-(1/4-1/8)-…-(1/8192-1/16384)1/2-(1/2-1/4)-(1

1/2-(1/2-1/4)-(1/4-1/8)-…-(1/8192-1/16384)
1/2-(1/2-1/4)-(1/4-1/8)-…-(1/8192-1/16384)

1/2-(1/2-1/4)-(1/4-1/8)-…-(1/8192-1/16384)
1/2-(1/2-1/4)-(1/4-1/8)-…-(1/8192-1/16384)
=1/2-1/2+1/4-1/4+1/8-1/8+.-1/8192+1/16384
=1/16384
如有不明白,