Các câu hỏi tương tự
A=\(\dfrac{3}{5x8}\)+\(\dfrac{3}{8x11}\)+\(\dfrac{3}{11x14}\)+....+\(\dfrac{3}{100x103}\)
A=3/5x8+3/8x11+3/11x14+...+3/2009x2012 + 3/2012x2015
B = 3/2x5 + 3/5x8 + 3/8x11 + 3/11x14
\(\frac{1}{2x5}+\frac{1}{5x8}+\frac{1}{8x11}+\frac{1}{11x14}+\frac{1}{14x17}+\frac{1}{17x20}\)
tính
A= 3/5x2 + 3/5x8 + 3/8x11 +3/ 11x14
giúp mk nha
Tính B = \(\frac{3}{2x5}+\frac{3}{5x8}+\frac{3}{8x11}+\frac{3}{11x14}\)
1/5x8+1/8x11+1/11x14+...+1/mx(m+3)=101/1540
Chứng Minh: \(\frac{2}{2x5}\)+\(\frac{2}{5x8}\)+\(\frac{2}{8x11}\)+\(\frac{2}{11x14}\)+\(\frac{2}{14x17}\)< 1. Giải hẳn ra nhé
1/8x11+1/11x14+1/14x17+...+1/603x608