1/2+1/4+1/8+…+1/256+1/512+1/1024=?
1/2+1/4+1/8……+1/256+1/512+1/1024 简便计算,
1024+512+256+.+2+1+2/1+4/1+8/1+.512/1+1024/1
1 1/1024+2 1/512+3 1/256+4 1/256+……+256 1/4+512
1\1024+1\512+1\256+...+1\2+1+2+4+8+...+1024
1+1+2+4+8+16+32+64+128+256+512+1024+2048+4096=?
1.1/2+1/4+1/8+1/16+1/32+1/64+……+1/512+1/1024=
2/1+4/1+8/1+16/1+32/1+64/1+128/1+256/1+512/1+1024/1=?
1+2+4+8+16+32+64+128+256+512+1024=______.
1/2+(-1/4)+(-1/8)+(-1/16)+…+(-1/256)+(-1/512)+(-1/1024)
1/2+1/4+1/8+……+512/1+1024/1 的简算
1又1/1024+2又1/512+4又1/256+...+256又1/4+512又1/2=
1-1/2+1/4-1/8+1/16-1/32+1/64-1/128+1/256-1/512+1/1024-1/2048