Các câu hỏi tương tự
tìm x biết (x+1/1.3).(1+1/2.4)..............(1+1/x.(x+2))=4016/2007
Tìm x, biết \(\left(1+\frac{1}{1.3}\right).\left(1+\frac{1}{2.4}\right).\left(1+\frac{1}{3.5}\right)....\left(1+\frac{1}{x\left(x+2\right)}\right)=\frac{4016}{2007}\)
11 tháng 5 2022 lúc 17:09
\(Tìm.x:\)
\(2x-\left(1+\dfrac{1}{1.3}\right).\left(1+\dfrac{1}{2.4}\right).\left(1+\dfrac{1}{3.5}\right)...\left(1+\dfrac{1}{2019+2021}\right)=x+1\)
ét o ét .-.
A=(1+\(\frac{1}{1.3}\)).(1+\(\frac{1}{2.4}\)).(1+\(\frac{1}{3.5}\))x.......x(1+\(\frac{1}{98.100}\))
Tìm x€ Z, biết:
1) 7/11 x -3/7< x< -1/5 :1/20 -(-2)3
2) tính tổng S= 1/1.3 + 1/2.4 + 1/3.5 +...+1/7.9 + 1/8.10
Cách làm
1. tìm x thuộc N
a) hỗn số: x 3/4 = 21989/7996
b) hỗn số: x 2/x = 83/x
2. tính
S1 = 1 / 2.4 + 1 / 4.6 + 1 / 6.8 + ............ + 1 / 100.102
S2 = 3 / 1.3 + 3 / 3.5 + ....... + 3 / 27.29
(1+1/1.3)(1+1/2.4)(1+1/3.5).....(1+1/2021.2023)
(1+1/1.3) . (1+1/2.4) . (1+1/3.5) .... (1+1/2019.2021
A= (1+1/1.3).(1+1/2.4). ......................... . (1+1/99.101)