Thay \(a=\frac{1}{2015}\) vào biểu thức P ta được:
\(P=\left|\frac{1}{2015}-\frac{1}{2014}\right|+\left|\frac{1}{2015}-\frac{1}{2016}\right|\)
Ta có: \(P=\frac{1}{2014}-\frac{1}{2015}+\frac{1}{2015}-\frac{1}{2016}\)
\(P=\frac{1}{2014}-\frac{1}{2016}\)
\(P=\frac{2016-2014}{2014.2016}=\frac{2}{2014.2016}\)
\(P=\frac{1}{1007.2016}=\frac{1}{2030112}\)