化简(1+2^(-1/8))(1+2^(-1/4))(1+2^(-1/2))
问题描述:
化简(1+2^(-1/8))(1+2^(-1/4))(1+2^(-1/2))
化简 (1+2^(-1/8))(1+2^(-1/4))(1+2^(-1/2))
答
=(1-2^(-1/8))(1+2^(-1/8))(1+2^(-1/4))(1+2^(-1/2))/(1-2^(-1/8))
=(1-2^(-1/4))(1+2^(-1/4))(1+2^(-1/2))/(1-2^(-1/8))
=(1-2^(-1/2))(1+2^(-1/2))/(1-2^(-1/8))
=(1-2^(-1))/(1-2^(-1/8))
=(1-1/2)/(1-1/256)
=128/255