Cho s=1/20+1/21+1/22+...+1/199+1/200. Chứng minh s>9/10
CHO
S=\(\frac{1}{20}+\frac{1}{21}+\frac{1}{22}+...+\frac{1}{199}+\frac{1}{200}\)
CHỨNG MINH RẰNG S>\(\frac{9}{10}\)
Cho C = 1/20 + 1/21 + 1/22 + ... + 1/200. Chứng tỏ C > 9/10.
1)
\(Cho:\frac{1}{20}+\frac{1}{21}+\frac{1}{22}+...+\frac{1}{200}\)
Chứng minh: \(A>\frac{9}{10}\)
2)
Cho \(B=\frac{1}{101}+\frac{1}{102}+\frac{1}{103}+...+\frac{1}{200}\)
Chứng minh \(B>\frac{7}{12}\)
1)
Cho \(\frac{1}{20}+\frac{1}{21}+\frac{1}{22}+...+\frac{1}{200}\)
Chứng minh: \(A>\frac{9}{10}\)
2)
Cho \(B=\frac{1}{101}+\frac{1}{102}+\frac{1}{103}+...+\frac{1}{200}\)
Chứng minh: \(B>\frac{7}{12}\)
S=5/20+5/21+5/22+5/23+5/24 HÃY CHỨNG MINH S>1
A=1/20+1/21+1/22+1/23+1/24+...+1/200 CMR: A>9/10
Chứng minh:
S= 5/20 + 5/21 + 5/22 + 5/23 + 5/24 > 1
Cho C= 1/20+1/21+1/22+...+1/200
CMR C > 9/10