ta có:\(\frac{2011+2012}{2012+2013}=\frac{2011}{2012+2013}+\frac{2012}{2012+2013}\)
vì \(\frac{2011}{2012+2013}<\frac{2011}{2012};\frac{2012}{2012+2013}<\frac{2012}{2013}\)
=>A<B
CHO : \(A=\frac{2010}{2011}+\frac{2011}{2012}+\frac{2012}{2013}\)
VÀ : \(B=\frac{2010+2011+2012}{2011+2012+2013}\)
SO SÁNH A VÀ B
So sánh \(A=\frac{2011}{2012}+\frac{2012}{2013}\) và \(B=\frac{2011+2012}{2012+2013}\)
so sánh \(A=\frac{2011+2012}{2012+2013}vàB=\frac{2011}{2012}+\frac{2012}{2013}\)
cho \(A=\frac{2011}{2012}+\frac{2012}{2013};B=\frac{2011+2013}{2012+2013}\)So sánh A và B
So sánh:
A=\(\frac{2010}{2011}+\frac{2011}{2012}+\frac{2012}{2013}\)
B=\(\frac{2010+2011+2012}{2011+2012+2013}\)
So sánh \(A=\frac{2011}{2012}+\frac{2012}{2013}\) và \(B=\frac{2011+2012}{2012+2013}\)
So sánh: A=\(\frac{2011+2012}{2012+2013}\)và B=\(\frac{2011}{2012}+\frac{2012}{2013}\)
\(\frac{A^{2011+2012}}{A^{2012+2013}}\)VÀ\(\frac{A^{2011}}{A^{2012}}+\frac{A^{2012}}{A^{2013}}\)
So sánh
So sánh P và Q biết
P=\(\frac{2010}{2011}+\frac{2011}{2012}+\frac{2012}{2013}\) và Q=\(\frac{2010+2011+2012}{2011+2012+2013}\)