Question

Answer 1

Thay `a = 1/2015` vào `P` ta được `:`

`P = | 1/2015 - 1/2014 | + | 1/2015 - 1/2016 |`

   `= 1/2014 - 1/2015 + 1/2015 - 1/2016`

   `= 2( 201482016 )`

   `= `1/2030112`

Answer 2

Ta có:

\(P=\dfrac{1}{2014}-\dfrac{1}{2015}+\dfrac{1}{2015}-\dfrac{1}{2016}\)

\(P=\dfrac{1}{2014}-\dfrac{1}{2016}=\dfrac{2016-2014}{2014.2016}\)

\(P=\dfrac{2}{2014.2016}=\dfrac{1}{1007.2016}=\dfrac{1}{2030112}\)