1-1/2-1/4-1/8-.-1/1024=?
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1-1/2-1/4-1/8-.-1/1024=?
我知道这一题每次都分一半,最后等于1/1024,
我知道这一题每次都分一半,最后等于1/1024,
1-1/2-1/4-1/8-.-1/1024
=1-(1/2+14+1/8+...+1/1024)
=1-(1/2)[1-(1/2)^10]/[1-(1/2)]
=1-1+(1/2)^10
=(1/2)^10
=1/1024
=1-(1/2+14+1/8+...+1/1024)
=1-(1/2)[1-(1/2)^10]/[1-(1/2)]
=1-1+(1/2)^10
=(1/2)^10
=1/1024
求和:1/2+1/4+1/8+1/16+1/32+1/64+.+1/1024=?
1/2+1/4+1/8+1/16+...+1/1024
1024+512+256+.+2+1+2/1+4/1+8/1+.512/1+1024/1
1/2+1/4+1/8+1/16+1/32+1/64+.+1024=?
2/1+4/1+8/1+16/1+32/1……+1024/1=
1\1024+1\512+1\256+...+1\2+1+2+4+8+...+1024
1/2+3/4+7/8+...+1023/1024=?
1+2+4+8+16+32+.+1024=?
1.1/2+1/4+1/8+1/16+1/32+1/64+……+1/512+1/1024=
1/2+1/4+1/8……+1/256+1/512+1/1024 简便计算,
1/2+1/4+1/8+1/16+1/32……+1/1024
2/1+4/1+8/1+16/1+32/1+64/1+128/1+256/1+512/1+1024/1=?