Question

So sánh 2 phân số: 2005/2006 và 2006/2007

Answer 1

Ta có: \(\frac{2005}{2006}=1-\frac{1}{2006}\);  \(\frac{2006}{2007}=1-\frac{1}{2007}\)

Vì \(\frac{1}{2006}>\frac{1}{2007}\) nên \(1-\frac{1}{2006}

Answer 2

Ta có: 20052006 =1−12006 ;  20062007 =1−12007 

Vì 12006 >12007  nên 1−12006 <1−12007 

Vậy 

Answer 3

Ta có:

\(\frac{2005}{2006}=1-\frac{1}{2006}\)

\(\frac{2006}{2007}=1-\frac{1}{2007}\)

Mà \(\frac{1}{2006}>\frac{1}{2007}\) hay \(1-\frac{1}{2006}>1-\frac{1}{2007}\)

Nên \(\frac{2005}{2006}< \frac{2006}{2007}\)