作业帮4-1/2-1/4-1/8-1/16-1/32.-1/1024
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4-1/2-1/4-1/8-1/16-1/32.-1/1024
4-1/2-1/4-1/8-1/16-1/32.-1/1024
4-1/2-1/4-1/8-1/16-1/32.-1/1024
=4x1024/1024-(512+256+128.+1)/1024
=4096/1024-1023/1024
=3073/1024
=3又1024分之1
=4-(1/2+1/4+...+1/1024)
=4-1023/1024
=3+1/1024