1/2+1/4+1/8+1/16+1/32+1/64+1/128+1/256+1/512

1/2+1/4+1/8+1/16+1/32+1/64+1/128+1/256+1/512 2\1+4\1+8\1+16\1+64\1+128\1+256\1+512\1 1-1/2+1/4-1/8+1/16-1/32+1/64-1/128+1/128+1/256-1/512 1/2+1/4+1/8+1/16+1/32+1/64+1/128+1/256 1/2-1/4-1/8-1/16-1/32-1/64-1/128-1/256 1/2-1/4-1/8-16/1-32/1-64/1-128/1-256/1 1-1/2+1/4-1/8+1/16-1/32+1/64-1/128+1/256-1/512+1/1024-1/2048 简便计算(1/4)+(1/8)+(1/16)+(1/32)+(1/64)+(1/128)+(1/256)+(1/512) 1/4+1/8+1/16+1/32+1/64+1/128+1/256+1/512,急 速算与巧算1/2+1/4+1/8+1/16+1/32+1/64+1/128+1/256+1/512+1/1024+1/4 1+1+2+4+8+16+32+64+128+256+512+1024+2048+4096=? 1+1?2+2?4+4?8+8?16+16?32+32 64+64 128+128 256+256 512+512 10