1/2-1/4+1/8+1/32-1/64
=1/4+1/4-1/4+1/8+1/32-1/64
=1/4+1/8+1/32-1/64
=2/8+1/8+1/64+1/64-1/64
=3/8+1/64
=24/64+1/64
=25/64≠1/128
你的题目有没有问题。其实是 12-14+18-116+132-164+...
1/2-1/4+1/8+1/32-1/64
=1/4+1/4-1/4+1/8+1/32-1/64
=1/4+1/8+1/32-1/64
=2/8+1/8+1/64+1/64-1/64
=3/8+1/64
=24/64+1/64
=25/64≠1/128
你的题目有没有问题。其实是 12-14+18-116+132-164+...