C=2005/2+...+2005/2005
D=2006/1+2007/2+...+4009/2004
Tính C-D
Tinh A = \(\frac{\frac{2006}{1}+\frac{2006}{2}+\frac{2006}{3}+........\frac{2006}{2006}+\frac{2006}{2007}}{\frac{1}{2006}+\frac{2}{2005}+\frac{3}{2004}+.........+\frac{2005}{2}+\frac{2006}{1}}\)
1)A=2005^2005+1 trên 2005^2006+1 và B=2005^2004+1 trên 2005^2005 2)A=2006^2006+1 trên2007^2007+1 vàB=2006^2005+1 trên 2006^2006+1
\(\frac{\frac{2006}{2}+\frac{2006}{3}+\frac{2006}{4}+...........+\frac{2006}{2007}}{\frac{2006}{1}+\frac{2005}{2}+\frac{2004}{3}+.............+\frac{1}{2006}}\)
C= \(\dfrac{\dfrac{2006}{2}+\dfrac{2006}{3}+\dfrac{2006}{4}+.....+\dfrac{2006}{2007}}{\dfrac{2006}{1}+\dfrac{2005}{2}+\dfrac{2004}{3}+.....+\dfrac{1}{2006}}\)
GIÚP mình nha
Lèm ơn đấy !!!!!
So sánh A = 2005:1/6-2//2004:1/2006+2003 và B= 1:2007/2006
M = 20072-20062+20052-20042+.....+22-12
Tinh A = \(\frac{\frac{2006}{1}+\frac{2006}{2}+.......+\frac{2006}{2007}}{\frac{2006}{1}+\frac{2005}{2}+\frac{2004}{3}+.......\frac{1}{2006}}\)
Tính:
a) (2^2007 + 2^2006) : 2^2006 b) (3^2011 + 3^2010) : 3^2010
c) (5^2001 + 5^2000) : 5^2000 d) (4^2001 + 4^2000) : 4^2000
e) (6^2005 + 6^2004) : 6^2004 f) (7^2011 + 7^2010) : 7^2010