a. So sanh 2 phan so:A= 2015/2016+2016/2017+2017/2018 va B = 2015+2016+2017/2016+2017+2018
b.1/2.4+1/4.6+........+1/(2x-2).2x = 1/8
c.Cho A = 1/4+1/9+1/16+...+1/81+1/100 . Chung minh rang : A > 65/132
d.Cho B = 12/(2 . 4 ) ^ 2 + 20/ (4 . 6) ^2 + ...........+ 388/ ( 96 . 98 ) ^ 2 + 396/ ( 98 . 100 ) ^2 .Hay so sanh B voi 1 /4
So sanh A va B biet
A=2017^100/1+2017+2017^2+2017^3+.....+2017^100
B=2016^100/1+2016+2016^2+2016^3+.....+2016^100
so sanh A va B
\(A=\frac{2017^{100}}{1+2017+2017^2+2017^3+...+2017^{100}}\)
\(B=\frac{2016^{100}}{1+2016+2016^2+2016^3+...+2016^{100}}\)
Cho tong T=2/2^1+3/2^2+4/2^3 +...+2016/2^2015+2017/2^2016.So sanh T voi 3
so sanh : 1+2^1+2^2+2^3+.....+2^2016 va 2^2017
Cho tong T=2/2^1+3/2^2+4/2^3 +...+2016/2^2015+2017/2^2016.So sanh T voi 3
ai trả lời được mình tik 3 nick luôn
so sánh A và B :
a =2^0+2^2+2^4+............+2^2016
b = 2^2017
2. M = 1+2.(3^0 +3^1+3^2+.......+3^98+3^99)
a, Thu gọn
b, Tìm n để M=9^n
3.3^3+7^49:7^47
b)25.{32:[12-2^2+4.(16:2^3)]}
c)5^3+(3^4+4).2+(27-3):4
tim x
a)5.(12-x)-20=30
b) (50-6x ).18=2^3.3^2.5
tinh
s=3+6+...+2016
tim chu so tan cung cua 7^9+3
so sanh
a=1+2+2^2+2^3+2^4+...+2016
b=2^2017-1
kí hiệu ^ đây là mũ nhé mấy bạn
SO SÁNH:
A=\(\frac{\frac{2016}{1}+\frac{2015}{2}+\frac{2014}{3}+.....+\frac{2}{2015}+\frac{1}{2016}}{\frac{1}{2}+\frac{1}{3}+\frac{1}{4}+.....+\frac{1}{2016}+\frac{1}{2017}}\)
VÀ
B=2017
