(1+8/10)(1+8/22)(1+8/36)...(1+8/8352)
tính
(1+8/10)(1+8/22)(1+8/36).......(1+8/8352)
Tính: \(S=\left(1+\frac{8}{10}\right)\left(1+\frac{8}{22}\right)\left(1+\frac{8}{36}\right)...\left(1+\frac{8}{8352}\right)\))
Tính nhanh:
G=\(\left(1+\frac{8}{10}\right)\left(1+\frac{8}{22}\right)\left(1+\frac{8}{36}\right).....\left(1+\frac{8}{8352}\right)\)
G=(1+8/10)(1+8/22)(1+8/36)...(1+8/8352)
18.30.44...8360
G=----------------------------
10.22.36...8352
9.2.10.3.11.4...95.88
G=-----------------------------------
10.1.11.2.12.3...96.87
(9.10.11...95)(2.3.4....88)
G= -----------------------------------------
(10.11.12...96)(2.3.4...87)
9.88.
G= ---------= 33/4.
96
Mình cũng k biết làm bài này, cảm ơn bạn
Tính A=\(\left(1+\frac{8}{10}\right)\left(1+\frac{8}{22}\right)\left(1+\frac{8}{36}\right)...\left(1+\frac{8}{8352}\right)\)
Tính
\(\left(1+\frac{8}{10}\right).\left(1+\frac{8}{22}\right).\left(1+\frac{8}{36}\right)....\left(1+\frac{8}{8352}\right)\)
Tính (1+8/10).(1+8/11).(1+8/36).....(1+8/8352)
tính
a,(1+8/10).(1+8/22).(1+8/36).(1+8/52)................(1+8/8352)
b,2.4+3.5+4.6+5.7+6.8+...............+97.99+98.100
tìm GTNN của A= |x^2+5| +(2y-3)\(^4\)
\(A=1+2+2^2-2^3+2^4-2^5+...+2^{2016}\)
\(B=\left(1+\frac{8}{10}\right).\left(1+\frac{8}{22}\right).\left(1+\frac{8}{36}\right)...\left(1+\frac{8}{8352}\right)\)
2A=2+2^2+2^3-2^4+...+2^2017
2A+A=2+1+2^2+2+2^2+2^3-2^3+2^4-2^4+...+2^2017-2^2016
3A=1+2^2+2^3+2^2017
A=(1+2^2+2^3+2^2017)/3
Minh giai 1 bai thoi nha
Nho k cho minh voi
\(A=1-2+2^2-2^3+2^4-2^5+...+2^{2016}\)
\(B=\left(1+\dfrac{8}{10}\right).\left(1+\dfrac{8}{22}\right).\left(1+\dfrac{8}{36}\right)...\left(1+\dfrac{8}{8352}\right)\)
a) \(A=1-2+2^2-2^3+2^4-2^5+.................+2^{2016}\)
\(\Rightarrow2A=2\left(1-2+2^2-2^3+2^4-2^5+............+2^{2016}\right)\)
\(\Rightarrow2A=2-2^2+2^3-2^4+2^5-2^6+...........+2^{2017}\)
\(\Rightarrow2A-A=\left(2-2^2+2^3-2^4+.........+2^{2016}\right)-\left(1-2+2^3+2^4-2^5+.....+2^{2017}\right)\)\(\Rightarrow A=2^{2017}-1\)
Câu a xong đã, câu b tính sau :P