tính: 1/2000+2001+1/2001+2002+1/2002+2003+...+1/2009+2010
tính: 1/2000+2001+1/2001+2002+1/2002+2003+...+1/2009+2010
So sánh : a) A = 2001 + 2002 / 2002 + 2003 và B = 2001/2002 + 2002/ 2003
b) A = 2006^2006 + 1/2006^2007 +1 và B = 2006^2005 + 1/2006^2006 + 1
c ) A = 1999^1999 + 1/1999^2000 + 1 và B = 1999^1989 + 1/1999^2009 + 1
a) 1 - 2 - 3 + 4 +5 - 6 - 7 + ..... + 2001 - 2002 -2003 + 2004
b) 1 + 2 - 3 - 4 + 5 + 6 - 7 - 8 + ..... + 2001 + 2002 - 2003 - 2004
1.(3x -1/4) . (x+1/2)=0
2.x+4/2000 + x+3/2001 + x+2/2002 + x+1/2003
(2001/2002 +2002/2003 + 2003/2004) x(1/3 - 1/4 - 1/12)
Tìm x biết :
(x+4)/2000 +(x+3)/2001 = (x+2)/2002 +(x+1)/2003
A=2000+2001/2001+2002
B1/2+1/3+1/4+1/5+.....1/99+1/100
Tính nhanh: 1 + 2 + 3 + ... + 2001 +2002+2003