Question

So sánh : B = 2016/2017 + 2017/2018 + 2018/2016 với 3 

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Answer 1

\(B=\frac{2016}{2017}+\frac{2017}{2018}+\frac{2018}{2016}\)

\(B=1-\frac{1}{2017}+1-\frac{1}{2018}+1+\frac{2}{2016}\)

\(B=\left(1+1+1\right)-\left(\frac{1}{2017}+\frac{1}{2018}-\frac{2}{2016}\right)\)

\(B=3-\left(...\right)< 3\)

Answer 2

P/s :

\(\left(...\right)la`\left(\frac{1}{2017}+\frac{1}{2018}-\frac{2}{2016}\right)\)

quên ^^