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Tính Q=\(\frac{1.3}{3.5}+\frac{2.4}{5.7}+\frac{3.5}{7.9}+.....+\frac{\left(n-1\right)\left(n+1\right)}{\left(2n-1\right)\left(2n+1\right)}+......+\frac{1002.1004}{2005.2007}\)
Tính: \(Q=\frac{1.3}{3.5}+\frac{2.4}{5.7}+\frac{3.5}{7.9}+...+\frac{\left(n-1\right)\left(n+1\right)}{\left(2n-1\right)\left(2n+1\right)}+...+\frac{1002.1004}{2005.2007}\)
Tính: \(Q=\frac{1.3}{3.5}+\frac{2.4}{5.7}+\frac{3.5}{7.9}+...+\frac{\left(n-1\right)\left(n+1\right)}{\left(2n-1\right)\left(2n+1\right)}+...+\frac{1002.1004}{2005.2007}\)
Tính (1.3)/(3.5) + (2.4)/(5.7) + ... + (1002.1004)/(2005.2007)
Help me please!!!!!!!!!!!!!
Tính : Q = \(\frac{1.3}{3.5}\)+ \(\frac{2.4}{5.7}\)+\(\frac{3.5}{7.9}\)+.....+\(\frac{\left(n-1\right)\left(n+1\right)}{\left(2n-1\right)\left(2n+1\right)}\)+......+\(\frac{1002.1004}{2005.2007}\)
Tính B=\(\frac{1.3}{3.5}+\frac{2.4}{5.7}+\frac{3.5}{7.9}+.....+\frac{49.51}{99.101}\)
tính r = 2.2/1.3 + 3.3 / 2.4 + 4.4 / 3.5 +...+2006.2006/2005.2007
S =1/1.3-1/2.4+1/3.5-1/4.6+1/5.7 - 1/6.8+1/7.9-1/8.10
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tính r+=2^2/1.3+3^2/2.4+4^2/3.5+....+2006^2/2005.2007