Các câu hỏi tương tự
Tìm tích \(\frac{3}{2^2}+\frac{8}{3^2}+\frac{15}{4^2}+.....+\frac{99}{10^2}\)
\(\frac{3}{2^2}.\frac{8}{3^2}.\frac{15}{4^2}......\frac{99}{10^2}\)
Tính
\(\frac{3}{2^2}.\frac{8}{3^2}.\frac{15}{4^2}.....\frac{99}{10^2}\)
\(\left(\frac{1}{2}-1\right)\left(\frac{1}{3}-1\right)\left(\frac{1}{4}-1\right)...\left(\frac{1}{1000-1}\right)\)
\(\frac{3}{2^2}.\frac{8}{3^2}.\frac{15}{4^2}...\frac{99}{10^2}\)
ai tìm đc tích này tặng ba tik
a,A=\(2\frac{1}{2}:\left(\frac{-1}{2}\right)^2-\frac{1}{-3}.\left(\frac{-1}{2}-\frac{4}{3}:\frac{-8}{9}\right)\)
b,B=\(\left(3\frac{10}{99}+4\frac{11}{99}-\frac{58}{299}\right).\left(\frac{1}{2}-\frac{4}{3}-\frac{1}{6}\right)\)
1:
a) Cho A= \(\frac{1}{1^2}+\frac{1}{2^2}+\frac{1}{3^2}+...+\frac{1}{100^2}\) . So sánh A và \(\frac{199}{100}\)
b) Tìm tích: \(\frac{3}{2^2}.\frac{8}{3^2}.\frac{15}{4^2}.\frac{24}{5^2}.....\frac{99}{10^2}\)
\(\frac{3}{2^2}\)x \(\frac{8}{3^2}\)x\(\frac{15}{4^2}\)x...x\(\frac{99}{10^2}\)
nhớ chỉ cả cách giả nhé
tim x biet
a)\(\frac{3}{4}.\frac{8}{9}.\frac{15}{16}...\frac{2499}{2500}\)
b) \(\frac{2^2}{1.3}.\frac{3^2}{2.4}.\frac{4^2}{3.5}...\frac{50^2}{49.51}\)
Tìm tích:
1.\(\left(\frac{1}{2}+1\right)\times\left(\frac{1}{3}+1\right)\times\left(\frac{1}{4}+1\right)\times...\times\left(\frac{1}{999}+1\right)\)
2.\(\left(\frac{1}{2}-1\right)\times\left(\frac{1}{3}-1\right)\times\left(\frac{1}{4}-1\right)\times...\times\left(\frac{1}{1000}-1\right)\)
3.\(\frac{3}{2^2}\times\frac{8}{3^2}\times\frac{15}{4^2}\times...\times\frac{99}{10^2}\)