So sánh:
A= \(\frac{10^{2004}+1}{10^{2005}+1}\)và B=\(\frac{10^{2005}+1}{10^{2006}+1}\)
So Sánh:
A=\(\dfrac{10^{11}-1}{10^{12}-1}\) và B=\(\dfrac{10^{10}+1}{10^{11}+1}\)
C=\(\dfrac{2005^{2005}+1}{2005^{2006}+1}\) và D=\(\dfrac{2005^{2004}+1}{2005^{2005}+1}\)
So sánh A và B. Cho A = \(\frac{10^{2004}+1}{10^{2005}+1}\)và B = \(\frac{10^{2005}+1}{10^{2006}+1}\)
10A=\(\frac{10x\left(10^{2004}+1\right)}{10^{2005}+1}\)=
15793486/64325+548662%546317787=
Cho
\(A=\frac{10^{2004}+1}{10^{2005}+1}\)
\(B=\frac{10^{2005}+1}{10^{2006}+1}\)
So sánh A và B
Ta có:10A=\(\frac{10^{2005}+10}{10^{2005}+1}\)=1+\(\frac{9}{10^{2005}+1}\)
10B=\(\frac{10^{2006}+10}{10^{2006}+1}\) =1+\(\frac{9}{10^{2006}+1}\)
Mà:\(\frac{9}{10^{2005}+1}\) >\(\frac{9}{10^{2006}+1}\)
Vậy:1+\(\frac{9}{10^{2005}+1}\) >1+\(\frac{9}{10^{2006}+1}\)
Vậy:A>B
cho
GIAI GIUP MINH DI
A=\(\frac{37^{2018}+5}{37^{2019}+5}\)
B=\(\frac{37^{2018}+1}{37^{2019}+1}\)
Cho \(A=\frac{10^{2004}+1}{10^{2005}+1}\)và \(B=\frac{10^{2005}+1}{10^{2006}+1}\)
Hãy so sánh A và B
giúp mik giải toán ik
Ta có: \(A=\frac{10^{2004}+1}{10^{2005}+1}\)
Cho A = \(\frac{10^{2004}+1}{10^{2005}+1}\) và B = \(\frac{10^{2005}+1}{10^{2006}+1}\). So sánh A với B
Ta có B= 102005+1 /102006+1
=102004*10+1/102005*10+1
=102004+1/102005+1
Vậy A=B
A=\(\frac{2^{2010}+1}{2^{2007}+1}\) và B=\(\frac{2^{2012}+1}{2^{2009}+1}\)
C=\(\frac{10^{14}-1}{10^{15}-1}\) và D=\(\frac{10^{19}+1}{10^{19}+1}\)
E=\(\frac{2004+2005}{2005+2006}\) và F=\(\frac{2004+2005}{2005+2006}\)
So sánh A và B:
a,A=\(\frac{10^{2004}+1}{10^{2005}+1}\)
B=\(\frac{10^{2005}+1}{10^{2006}+1}\)
b,A=\(\frac{20^{10}+1}{20^{10}-1}\)
B=\(\frac{20^{10}-1}{20^{10}-3}\)
a) Ta có : 10A = \(\frac{10\left(10^{2004}+1\right)}{10^{2005}+1}=\frac{10^{2005}+10}{10^{2005}+1}=1+\frac{9}{10^{2005}+1}\)
Lại có 10B = \(\frac{10\left(10^{2005}+1\right)}{10^{2006}+1}=\frac{10^{2006}+10}{10^{2006}+1}=1+\frac{9}{10^{2006}+1}\)
Vì \(\frac{9}{10^{2005}+1}>\frac{9}{10^{2006}+1}\Rightarrow1+\frac{9}{10^{2005}+1}>1+\frac{9}{10^{2006}+1}\)
=> 10A > 10B
=> A > B
b) Ta có A = \(\frac{20^{10}+1}{20^{10}-1}=\frac{20^{10}-1+2}{20^{10}-1}=1+\frac{2}{20^{10}-1}\)
Lại có B = \(\frac{20^{10}-1}{20^{10}-3}=\frac{20^{10}-3+2}{20^{10}-3}=1+\frac{2}{20^{10}-3}\)
Vì \(\frac{2}{20^{10}-1}< \frac{2}{20^{10}-3}\Rightarrow1+\frac{2}{20^{10}-1}< 1-\frac{2}{20^{10}-3}\)
=> A < B
Cảm ơn bạn rất nhiều nha
A = \(\frac{10^{2004}+1}{10^{2005}+1}\) So sánh B = \(\frac{10^{2005}+1}{10^{2006}+1}\)
Ta thấy : A = \(\frac{10^{2004}+1}{10^{2005}+1}< 1\)
Ta có : A = \(\frac{10^{2004}+1}{10^{2005}+1}< \) \(\frac{10^{2005}+1+9}{10^{2006}+1+9}\) = \(\frac{10\left(10^{2005}+1\right)}{10\left(10^{2006}+1\right)}\) = B
Vậy A < B
so sánh A và B biết :
A = \(\frac{^{10^{2004+1}}}{10^{2005+1}}\)B= \(\frac{10^{2005+1}}{10^{2006+1}}\)