\(\frac{20102010}{20112011}=\frac{2010}{2011}\)
\(\frac{20122012}{20112011}=\frac{2012}{2011}\)
\(\left(\frac{2010}{2011}+\frac{2012}{2011}\right).x-1=2011\)
\(\frac{4022}{2011}.x-1=2011\)
\(2.x-1=2011\)
\(2.x=2011+1\)
\(2.x=2012\)
\(x=2012:2\)
\(x=1006\)
a ) So sánh A và B :
A = 12345678/ 87654321 B = 2012 / 2011
b ) Tính nhanh : ( 2011 x 20122012 ) : ( 20112011 x 2012 )
So sánh A và B
A=20112011 + 2008 x 20112011
B=20112011 x 2010 - 20112011
so sánh giá trị của A và B:
A=20112011 + 2008 x 20112011
B=20112011 x 2010 - 20112011
Tìm x, biết:
\(\frac{1}{3}+\frac{1}{6}+\frac{1}{10}+...+\frac{2}{x.\left(x+1\right)}=\frac{2011}{2013}\)
tìm x
\(\frac{1}{3}+\frac{1}{6}+\frac{1}{10}+.....+\frac{2}{x\cdot\left(x+1\right)}=\frac{2011}{2013}\)
Tìm X : \(1+\frac{2}{6}+\frac{2}{12}+\frac{2}{20}+...+\frac{2}{x.\left(x+1\right)}=1\frac{2009}{2011}\)
(20112011*2010-20102010*2011):(5+10+15+...+2020) cho mik câu trả lời đầy đủ nha thanks
Cho K:\(\frac{1+\left(1+2\right)+\left(1+2+3\right)+........+\left(1+2+3+........+2012\right)}{2012\text{x}1+2011\text{x}2+2010\text{x}3+.............+1\text{x}2012}\)
Tính K cộng với 2011
Tìm x
(\(\left(1+\frac{1}{2}\right)x\left(1+\frac{1}{3}\right)x\left(1+\frac{1}{4}\right)x...x\left(1+\frac{1}{x}\right)=1008\frac{1}{2}\)
