1. Cho A=\(\frac{1}{1.101}\)+\(\frac{1}{2.102}\)+...+\(\frac{1}{10.110}\); B= \(\frac{1}{1.11}\)+\(\frac{1}{2.12}\)+...+\(\frac{1}{100.110}\)Tính A : B2. Cho A= 1+\(\frac{3}{2^3}\)+\(\frac{4}{2^4}\)+...+\(\frac{100}{2^{100}}\).Rút gọn...
Đọc tiếp
1. Cho A=\(\frac{1}{1.101}\)+\(\frac{1}{2.102}\)+...+\(\frac{1}{10.110}\); B= \(\frac{1}{1.11}\)+\(\frac{1}{2.12}\)+...+\(\frac{1}{100.110}\)
Tính A : B
2. Cho A= 1+\(\frac{3}{2^3}\)+\(\frac{4}{2^4}\)+...+\(\frac{100}{2^{100}}\).Rút gọn A
