Question

so sánh A=-2012/4025 và B=-1999/3997

Answer 1

Ta có:

\(A=\frac{-2012}{4025}=\frac{-2012}{4025}.2=\frac{-4024}{4025}\)

\(B=\frac{-1999}{3997}=\frac{-1999}{3997}.2=\frac{-3998}{3997}\)

\(\frac{4024}{4025}< 1< \frac{3998}{3997}\Rightarrow\frac{4024}{4025}< \frac{3998}{3887}\Rightarrow\frac{-4024}{4025}>\frac{-3998}{3997}\)hay \(\frac{-2012}{4025}>\frac{-1999}{3997}\)

\(\Rightarrow A>B\)