So sanh :2009^2009+1/2009^2010+1 va 2009^2010-2/2009^2011-2
So sanh : U = \(\frac{2009^{2005}+1}{2009^{2010}+1}\)va V = \(\frac{2009^{2010}+2}{2009^{2011}+2}\)
Bai 1.Tim x, y biet :
2x(3y-2)+(3y-2) = -55
Bai 2 .a) So sanh : -22/45 va -51/103
b) So sanh A = 2009^2009 +1 / 2009^2010 va B = 2009^2010-2/2009^2011-2
Bai 3 :
a)Tim so tu nhien co 3 chu so , biet rang khi chia so do cho cac so 25, 28,35thi duoc cac so du lan luot la 5,8,15
b)Tim x: (x+1)+(x+2)+(x+3)+...+(x+100)=205550
so sanh: A=2009^2009+1/2009^2010+1 và B=2009^2010-2/2009^2011-2
H = 1 + 2 + 2^2 + 2^3 + 2^4 + 2^5 + 2^6 + ... + 2^2009
k = 2^2010 - 1
So sanh k va H
So sanh A va B biet A=2010/2011+2011/2012+2012/2010 va B=1/3+1/4+1/5+....+1/17
2. So sánh A và B:
A= 2006/2007 - 2007/2008 + 2008/2009 - 2009/2010
B=-1/2006*2007 - 1/2008*2009
so sanh cac phan so sau (10^2008)+1-(10^2009)+1 va (10^2009)+1/(10^2010)+1
tinh:A=1+2-3-4+5+6-7-8+9+....+2006-2007-2008+2009+2010-2011-2012+2013+2014
