Question

SO SÁNH: 2005^2005+1/2005^2006+1 và B= 2005^2004+1/2005^2005+1

Answer 1

\(A=\frac{2005^{2005}+1}{2005^{2006}+1}\)

\(2005A=\frac{2005^{2006}+2005}{2005^{2006}+1}=\frac{2005^{2006}+1+2004}{2005^{2006}+1}=\frac{2005^{2006}+1}{2005^{2006}+1}+\frac{2004}{2005^{2006}+1}\)

\(B=\frac{2005^{2004}+1}{2005^{2005}+1}\)

\(2005B=\frac{2005^{2005}+2005}{2005^{2005}+1}=\frac{2005^{2005}+1+2004}{2005^{2005}+1}=\frac{2005^{2005}+1}{2005^{2005}+1}+\frac{2004}{2005^{2005}+1}\)

Vì \(\frac{2004}{2005^{2006}+1}

Answer 2

A bé hơn B

Answer 3

5^x + 11^y=26

tìm x,y