\(\left(\frac{1}{1.2}+\frac{1}{3.4}+\frac{1}{5.6}+.....+\frac{1}{2017.2018}\right)-\left(\frac{1}{1010}+\frac{1}{1011}+\frac{1}{1012}+.....+\frac{1}{2017}\right)\)
 

cho \(a=\frac{1}{1.2}+\frac{1}{3.4}+\frac{1}{5.6}+....+\frac{1}{2017.2018}\)   ; \(b=\frac{1}{1010}+\frac{1}{1011}+\frac{1}{1012}+...+\frac{1}{2018}\) . Tính (a-b)^2019

tính hợp lí:

\(\left(\frac{1}{1.2}+\frac{1}{3.4}+\frac{1}{5.6}+...+\frac{1}{2017.2018}\right)-\left(\frac{1}{1010}+\frac{1}{1011}+...+\frac{1}{2018}\right)\)

cho A=1/1.2+1/3.4+1/5.6+....+1/2021.2022 và                                                       B=1011+1010/1012+1009/1013+1008/1014+...+2/2020+1/2021               Chứng minh rằng : B/A là số nguyên

Cho A=1/1.2+1/3.4+....+1/2017.2018

        B=1/1010+1/1011+......+1/2018

So sánh A và B

So sánh:

A = \(\frac{1}{1.2}\) + \(\frac{1}{3.4}\) + \(\frac{1}{5.6}\)+....+\(\frac{1}{2017.2018}\) và B = \(\frac{1}{1010}\)+\(\frac{1}{1011}\)+...+\(\frac{1}{2018}\)

Cho A = 1/1.2 + 1/3.4 + 1/5.6 +....+ 1/2017.2018

       B =  1/1009 + 1/1010 + 1/1011 +...+ 1/2018

Tính B - A ??

Ai đúng và sớm nhất thì mình tick nha ^^

tính: D=(1+1/3+1/5+...+1/2017)-(1/2+1/4+1/6+...+1/2018)/1/1010+1/1011+1/1012+...+1/2018

Tính:

E=(1+1/3+1/5+...+1/2017)-(1/2+1/4+1/6+...+1/2018) / 1/1010+1/1011+1/1012+...+1/2018