Các câu hỏi tương tự
c/m : B=36/1.3.5+36/3.5.7+36/5.7.9+...+36/25.27.29 < 3
Chứng minh B=36/1.3.5+36/3.5.7+36/5.7.9+...+36/25.27.29<3
Chứng minh rằng: B=36/1.3.5+36/3.5.7+36/5.7.9+...+36/25.27.29<3.
G = 36/1.3.5 + 36/3.5.7 + 36/5.7.9 + ... + 36/25.27.29
tính G
1:a) Tính
\(A=\frac{36}{1.3.5}+\frac{36}{3.5.7}+\frac{36}{5.7.9}+...+\frac{36}{25.27.29}\)
b) CMR : A<3
chứng minh rằng
\(B=\frac{36}{1.3.5}+\frac{36}{3.5.7}+\frac{36}{5.7.9}+...+\frac{36}{25.27.29}\)
Chứng minh B=\(\frac{36}{1.3.5}+\frac{36}{3.5.7}+\frac{36}{5.7.9}+...+\frac{36}{25.27.29}<3\)
\(\frac{36}{1.3.5}+\frac{36}{3.5.7}+\frac{36}{5.7.9}+... +\frac{36}{25.27.29}\)
Giúp mình bài này với nha!
Tính: 1.3.5+3.5.7+5.7.9+...+97.99.101