a) \(\frac{214}{315}>\frac{205}{321}\)
b) \(\frac{2008}{2009}
a) \(\frac{214}{315}>\frac{205}{321}\)
b) \(\frac{2008}{2009}
so sanh
\(\frac{205}{321}va\frac{214}{315}\)
A=\(\frac{2018}{2019}+\frac{2019}{2020}B=\frac{2018+2019}{2019+2020}\)
Không dùng máy tính hãy so sánh \(\frac{205}{321}\)và \(\frac{214}{315}\)
so sánh \(\frac{2009^{2008}+1}{2009^{2009}+1}\)và \(\frac{2009^{2008}+5}{2009^{2008}+9}\)
So sánh: A= \(\frac{9}{a^{2009}}\)+ \(\frac{7}{a^{2008}}\)và B=\(\frac{8}{a^{2008}}\)+ \(\frac{8}{a^{2009}}\)(a thuộc N sao)
so sánh\(\frac{2009^{2008+1}}{2009^{2009+1}}\) và \(\frac{2009^{2008+5}}{2009^{2009+9}}\)
So sánh : A=\(\frac{2008}{2009}\)+\(\frac{2009}{2010}\)+\(\frac{2010}{2011}\)và B=\(\frac{2008+2009+2010}{2009+2010+2011}\)
A=\(\frac{2006}{2007}-\frac{2007}{2008}+\frac{2008}{2009}-\frac{2009}{2010}\)
B=\(\frac{-1}{2006.2007}-\frac{1}{2008.2009}\)
So Sánh
\(\frac{2007}{2008}+\frac{2008}{2009}\)và \(\frac{2007}{2008}+\frac{2008}{2009}\)
So sánh \(\frac{2008}{2009}+\frac{2009}{2010}và\frac{2008+2009}{2009+2010}\)