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
Cho A=1-1/2+1/3-1/4+........+1/2017-1/2018 và
B=1/1010+1/1011+1/1012+.......+1/2017+1/2018
Tính A/B^2018
D=(1+1/3+1/5+...+1/2017)-(1/2+1/4+1/6+...+1/2018)/1/1010+1/1011+...+1/2018
Chứng minh rằng 1 - 1/2 + 1/3 - 1/4 + 1/5 - ... - 1/2018 = 1/1010 + 1/1011 + 1/1012 + ... + 1/2018
cho S =1-1/2+1/3-1/4+...+1/2017-1/2018+1/2019
Va P=1/1010+1/1011+1/1012+...+1/2019
Tinh (S-P)2018
LM GIÚP MÌNH VỚI
CM ƠN TRƯỚC NHA
Tính \(\frac{\left(1+\frac{1}{3}+\frac{1}{5}+...+\frac{1}{2017}\right)}{\frac{1}{1010}+\frac{1}{1011}+\frac{1}{1012}+...+\frac{1}{2018}}\)
So sánh A và B biết :
\(A=1-\frac{1}{2}+\frac{1}{3}-\frac{1}{4}+...+\frac{1}{2017}-\frac{1}{2018}\)
\(B=\frac{1}{1010}+\frac{1}{1011}+\frac{1}{1012}+...+\frac{1}{2018}\)
so sánh 1 x 3 x 5 x ....x 2017 và 1010/2 x 1011/2 x 1012/2 x .... x 2018/2
Cho A =\(1-\frac{1}{2}+\frac{1}{3}-\frac{1}{\text{4}}+...+\frac{1}{2017}-\frac{1}{2018}+\frac{1}{2019}\)
và B=\(\frac{1}{1010}+\frac{1}{1011}+\frac{1}{1012}+...+\frac{1}{2018}+\frac{1}{2019}\)
Tính \(\left(A-B-1\right)^{2019}\)