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))

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