急求解啊我想睡觉5555
发布网友
发布时间:2024-10-08 07:16
我来回答
共2个回答
热心网友
时间:2024-10-08 07:37
(1+1/2)(1+1/2^2)(1+1/2^4)(1+1/2^8)+1/2^15
=2(1-1/2)(1+1/2)(1+1/2^2)(1+1/2^4)(1+1/2^8)+1/2^15
=2(1-1/2^2)(1+1/2^2)(1+1/2^4)(1+1/2^8)+1/2^15
=2(1-1/2^4)(1+1/2^4)(1+1/2^8)+1/2^15
=2(1-1/2^8)(1+1/2^8)+1/2^15
=2(1-1/2^16)+1/2^15
=2-1/2^15+1/2^15
=2
热心网友
时间:2024-10-08 07:34
2(1-1/2)×(1-1/2^)……最后等于2