化簡(1+2^(-1/8))(1+2^(-1/4))(1+2^(-1/2)) 化簡(1+2^(-1/8))(1+2^(-1/4))(1+2^(-1/2))
=(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
1.8比2又3分之1化簡為最簡整數比
1.8比2又3分之1
=9/5:7/3
=27:35
化簡0.4比2.8是多少
七分之一