= 1/ 2 ( 1/1.2 - 1/2.3 +1/2.3-1/3.4+...+1/8.9-1/9.10 ) x = 22/45
= 1/2 .(1/2-1/90)x = 22/45
= 1/2 . 22/45. x=22/45
x = 22/45:( 22/45 .1/2)
x =2
duyệt
tim so tu nhien x biet (1/1.2.3+1/2.3.4+...+1/8.9.10)x=22/45
tim so tu nhien x biet (1/1.2.3+1/2.3.4+...+1/8.9.10)x=22/45
tim so tu nhien x biet (1/1.2.3 + 1/2.3.4 +...+ 1/8.9.10).x =23/45
tìm so tu nhien x biet (1/1.2.3 + 1/2.3.4+...+ 1/8.9.10).x=23/45
Tim x biet: \(\left(\frac{1}{1.2.3}+\frac{1}{2.3.4}+...\frac{1}{8.9.10}\right)x=\frac{22}{45}\)
Tim x biet
\(\left(\frac{1}{1.2.3}+\frac{1}{2.3.4}+...+\frac{1}{8.9.10}\right).x=\frac{23}{45}\)
(1/1.2.3+1/2.3.4+...+1/8.9.10).x=22/45
tìm x biết:(1/1.2.3+2/2.3.4+...+1/8.9.10).x=22/45
Tìm x:
(1/1.2.3+1/2.3.4+...+1/8.9.10).x=22/45
