\(A=\frac{2006}{2007}+\frac{2007}{2008}+\frac{2008}{2006}=1-\frac{1}{2007}+1-\frac{1}{2008}+1+\frac{2}{2006}.\)
\(A=3+\left(\frac{1}{2006}-\frac{1}{2007}\right)+\left(\frac{1}{2006}-\frac{1}{2008}\right)>3\)
Vậy A>3
So sanh A va B biet : A=2006/2007+2007/2008+2008/2009 va B=(2006+2007+2008)/(2007+2008+2009)
cho a = 2006/2007+2007/2008+2008/2006
so sánh a với 3
So sánh 2 biểu thức:
A = 2006/2007 + 2007/2008 + 2008/2009
B = 2006 + 2007 + 2008/2007 + 2008 + 2009
a.Tinh:
1/5x8+1/8x11+1/11x14+....+1/26x29
b.So sanh bieu thuc:
A=2006/2007+2007/2008+2008/2006 với 3
c.Tim x:
1/5.8+1/8.11+1/11.14+.......+1/x.x+3=101/1540
2. So sánh A và B:
A= 2006/2007 - 2007/2008 + 2008/2009 - 2009/2010
B=-1/2006*2007 - 1/2008*2009
Cho A=2006/20007+2007/2008+2008/2006
so sánh B= 2006/2007 + 2007/2008 + 2008/2006 với 3
so sanh :A=2007 x 2009 B=2008 x 2008
A= 2006 x 2010 B=2008 x2008
Cac ban giup minh toan nay nha nhanh len nhe
Cho A = 2006/2007 2007/2008 2008/2009 So sánh A với 3
