so sanh
a)-22/45 va -51/101
b)so sanh A=\(\frac{^{2009^{2009}}+1}{^{2009^{20010}}+1}\)va B=\(\frac{2009^{2010}-2}{2009^{2011}-2}\)
Cho hai so huu ti x va y voi 0<x=a/b<1, y =a+c/b+c,c thuoc Z. Hay so sanh x va y
cho a=(1-1/2)*(1-1/3)*(1-1/4)*...(1-1/19)*(1-1/20)
b=(1-1/4)*(1-1/9)*(1-1/16)*...*(1-1/18)*(1-1/180)
so sanh a va 1/21
so sanh b va 11/21
cho A=1+1/2+1/3+1/4+.......+1/4026 va B=1+1/3+1/5+........+1/4025
so sanh A/B va 1/2013/2014
cho A=1/1*2+1/3*4+...+1/99.100
B=7/2
C=5/6
so sanh A&B va so sanh A& C
so sanh S=1/30+1/31+1/32+....+1/59+1/60 voi 1/2
so sanh
a) \(\left(\frac{1}{16}\right)^{200}\)va\(\left(\frac{1}{2}\right)^{1000}\)
b) (-32)27 va (-18)39
a)so sanh so huu ti a/b va c.
b) chung minh voi b>0 a/b>1 thi a>b
a/b<1 thi a<b
so sanh A va B
A = 100^101 + 1 / 100^100 + 1
B = 100^100 + 1 / 100^99 + 1
