Các câu hỏi tương tự
\(\frac{2008+2009\cdot2010}{2010\cdot2011-2012}\)
tính nhanh:
\(\frac{2010\cdot2011-1}{2011\cdot2009+2010}\)
Tính nhanh:
\(\frac{2008\cdot2009+2000}{2009\cdot2010-2018}\)
TÍNH BẰNG CÁCH HỢP LÝ:
\(\frac{2011\cdot2010-1}{2009\cdot2011+2010}\)
\(C=\frac{2010+\frac{2009}{2}+\frac{2008}{3}+...+\frac{2}{2007}+\frac{1}{2008}}{\frac{1}{2}+\frac{1}{3}+\frac{1}{4}+...\frac{1}{2008}+\frac{1}{2009}}.\)
a) 2010/1+2009/2+2008/3+ ... +1/2010+2010 : 1+1/2+1/3+ ... +1/2010=
b) 1/2011+1/2010+1/2009+ ... +1/3+1/2 : 2010/1+2009/2+2008/3+ ... +1/2010=
So sánh A và B biết: A= \(\dfrac{2008+2008+2010}{2009+2010+2011}\) và B= \(\dfrac{2008}{2009}\)+ \(\dfrac{2009}{2010}\)+ \(\dfrac{2010}{2011}\)
\(\frac{2008+2009^{2010}}{2010^{2011}-2012}\)
cho A= 2007/2008 + 2008/2009 + 2009/2010
Cho B= 2007 + 2008 +2009/ 2008 + 2009 + 2010
Hãy so sánh A vá B.