用两种方法计算2/1+4/1+8/1+16/1+32/1+64/1

问题描述:

用两种方法计算2/1+4/1+8/1+16/1+32/1+64/1

1/2+1/4+1/8+1/16+1/32+1/64=1/2+1/4+1/8+1/16+1/32+1/64+1/64-1/64=1/2+1/4+1/8+1/16+1/32+1/32-1/64=1/2+1/4+1/8+1/16+1/16-1/64=1/2+1/4+1/8+1/8-1/64=1/2+1/4+1/4-1/64=1/2+1/2-1/64=1-1/64=63/641/2+1/4+1/8+1/...