Tinh A= 2014/2015+2015/2016+2016/2017+2017/2014 hay so sanh A voi 4
a,Cho A=\(\frac{2+2^2+2^3+...+2^{2017}}{1-2^{2017}}\)
Tinh A.
b,Cho A=\(\frac{1}{2017}+\frac{2}{2017^2}+\frac{3}{2017^3}+...+\frac{2017}{2017^{2017}}+\frac{2018}{2017^{2018}}\)
CMR: A<\(\frac{2017}{2017^2}\)
Mik dang can gap.Giup mik voi.Thanks nhiu^^
BT1;TINH
a)125.(-48)+25.48
c)-2017-(68-2017)
d) (-6-2).(-6+2)
tinh M=2017+2017/1+2+2017/1+2+3+...+2017/1+2+3+...+2016
So sanh a va b ma khong tinh gia tri cua a va b
A=2016×2018 ; B = 2017× 2017
Ai lam đung minh se tich cho😙😙😙😙😙😙
2017/2016va2018/2017 so sanh ma khong can tinh ket qua
( 2016 * 2017 + 2018 * 2 + 2015 ) : [ ( 2018 : 2017 - 2017 * 2015 ) + 2016 ]
2018 * 20182017 - 2017 * 20172018
2018 * 20182017 - 2017 * 20182018
Bai nay la bai tinh nhanh nha
A= 1+ 2+ 2^2+ 2^3+ ....+. 2^2016.Biet B=2^2017
Tinh B-A
Tinh A=2016.20162015-2015.20162016+2017
Ban nao giai nhanh minh tick cho. Giai ra nhe