Các câu hỏi tương tự
chứng minh:
A={1/101+1/102+1/103.....................+1/199+1/200
Cho A=1/101+1/102+1/103+...+1/200
Chứng minh A>7/12
Chứng minh: \(1-\frac{1}{2}+\frac{1}{3}-\frac{1}{4}+...+\frac{1}{199}-\frac{1}{200}=\frac{1}{101}+\frac{1}{102}+\frac{1}{103}+...+\frac{1}{199}+\frac{1}{200}\)
Câu hỏi :Chứng minh
\(1-\frac{1}{2}+\frac{1}{3}-\frac{1}{4}+...+\frac{1}{199}-\frac{1}{200}=\frac{1}{101}+\frac{1}{102}+\frac{1}{103}+...+\frac{1}{200}\)
Cho A= 1/101 + 1/102 + 1/103 + 1/104 +......+ 1/200
Chứng minh : a, A > 7/12
b,A > 5/8
Chứng minh
1/1·2 +1/3·4 +1/5·6 +....+1/199·200 =1/101 +1/102 +1/103 +...+1/200
Chứng minh
\(\frac{1}{1\cdot2}+\frac{1}{3\cdot4}+\frac{1}{5\cdot6}+....+\frac{1}{199\cdot200}=\frac{1}{101}+\frac{1}{102}+\frac{1}{103}+...+\frac{1}{200}\)
cho A=1/101+1/102+1/103+...+1/199+1/200 cmr 5/8<a<3/4
Chứng minh :1-1/2+1/3-1/4+...+1/199-1/200=1/101+1/102+....+1/200