Chung minh rang:\(\frac{3}{5}< S< \frac{4}{5}\)
Cho S =\(\frac{1}{31}+\frac{1}{32}+\frac{1}{33}+...+\frac{1}{60}\)
Chứng Minh Rằng \(\frac{3}{5}
Cho \(S=\frac{1}{31}+\frac{1}{32}+\frac{1}{33}+\frac{1}{34}+...+\frac{1}{60}\)
CMR : \(\frac{3}{5}< S< \frac{4}{5}\)
Cho S =\(\frac{1}{31}+\frac{1}{32}+\frac{1}{33}+...+\frac{1}{60}\)Chứng minh rằng \(\frac{3}{5}\)<S<\(\frac{4}{5}\)
Cho \(S=\) \(\frac{1}{31}+\frac{1}{32}+\frac{1}{33}+........+\frac{1}{60}\) CMR: \(\frac{3}{5}< S< \frac{4}{5}\)
\(S=\frac{1}{31}+\frac{1}{32}+\frac{1}{33}+...+\frac{1}{60}\)
So sánh S và 4/5
Cho tổng: S=\(\frac{1}{31}+\frac{1}{32}+...+\frac{1}{60}\) . Chứng minh \(\frac{3}{5}< S< \frac{4}{5}\)
Chứng minh rằng
\(A=\frac{3}{5}< \frac{1}{31}+\frac{1}{32}+\frac{1}{33}+...+\frac{1}{60}< \frac{4}{5}\)
Cho S=\(\frac{1}{31}+\frac{1}{32}+...+\frac{1}{60}\)
Chứng minh rằng 3/5<S<4/5