10.(1/1.2+5/2.3+11/3.4+...+89/9.10)
Tính:
10.(1/1.2+5/2.3+11/3.4+...+89/9.10)
A=\(\frac{1}{1.2}\)+\(\frac{5}{2.3}\)+\(\frac{11}{3.4}\)+.....+\(\frac{89}{9.10}\)
(1/1.2+1/2.3+1/3.4+.....+1/8.9+1/9.10).100-[5/2:(x+206/100):1/2=89
tìm x
(1/1.2+1/2.3+1/3.4+....+1/8.9+1/9.10).100-[5/2:(x+206/100)]:1/2=89
tìm x hộ mình với
Tính: A = 10.(1/1.2+5/2.3+...+89/9.10)
Tính: A = 10.(1/1.2+5/2.3+...+89/9.10)
tính
10.(1/1.2+5/2.3+...+89/9.10)
Tinh tong: S= 1/1.2 + 1/2.3+ 1/ 3.4 ..... + 1/9.10?