Gạch bỏ các số đã xuất hiện còn lại 2/1+2/101=204/101
Gạch bỏ các số đã xuất hiện còn lại 2/1+2/101=204/101
tính nhanh :
\(\frac{2}{1x5x9}\)+\(\frac{2}{5x9x13}\)+ \(\frac{2}{9x13x17}\)+ ......... + \(\frac{2}{93x97x101}\)
\(\frac{2}{1x5x9}\)+\(\frac{2}{5x9x13}\)+\(\frac{2}{9x13x17}\)+...+\(\frac{2}{93x97x101}\)
\(\frac{2}{1x5x9}\)+\(\frac{2}{5x9x13}\)+\(\frac{2}{9x13x17}\)+...+\(\frac{2}{93x97x101}\)
\(\frac{2}{1x5x9}\)+\(\frac{2}{5x9x13}\)+\(\frac{2}{9x13x17}\)+...+\(\frac{2}{93x97x101}\)
\(\frac{2}{1x5x9}\)+\(\frac{2}{5x9x13}\)+\(\frac{2}{9x13x17}\)+...+\(\frac{2}{93x97x101}\)
tính nhanh
\(\frac{2}{3x5}+\frac{2}{5x7}+\frac{2}{7x9}+\frac{2}{9x11}+\frac{2}{11x13}+\frac{2}{13x15}+\frac{2}{1x2}+\frac{2}{2x3}+\frac{2}{3x4}+...+\frac{2}{8x9}+\frac{2}{9x10}\)
giải hẳn ra cho mình ai làm đúng mình tk cho nhé !!!
So sánh:\(\frac{\frac{\frac{1}{2}}{\frac{3}{4}}}{\frac{\frac{5}{6}}{\frac{7}{8}}}+\frac{\frac{\frac{8}{7}}{\frac{6}{5}}}{\frac{\frac{4}{3}}{\frac{2}{1}}}\) và\(\frac{\frac{\frac{1}{2}}{\frac{3}{4}}+\frac{\frac{8}{7}}{\frac{6}{5}}}{\frac{\frac{5}{6}}{\frac{7}{8}}+\frac{\frac{4}{3}}{\frac{2}{1}}}\)và \(\frac{\frac{\frac{1}{2}+\frac{8}{7}}{\frac{3}{4}+\frac{6}{5}}}{\frac{\frac{5}{6}+\frac{4}{3}}{\frac{7}{8}+\frac{2}{1}}}\)và\(\frac{\frac{\frac{1+8}{2+7}}{\frac{3+6}{4+5}}}{\frac{5+4}{\frac{6+3}{2+1}}}\)
\(\frac{2}{3}+\frac{2}{6}+\frac{2}{12}+\frac{2}{24}+\frac{2}{48}+\frac{2}{96}+\frac{2}{192}\)
\(C=\frac{2}{3}+\frac{2}{6}+\frac{2}{12}+\frac{2}{24}+\frac{2}{48}+\frac{2}{96}+\frac{2}{192}\)