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Câu dưới nha :
Có : A = 3^450 = (3^3)^150 = 27^150
5^300 = (5^2)^150 = 25^150
Vì 27^150 > 25^150 => 3^450 > 5^300
k mk nha
theo đề, ta có: A= 333^444=(111.3)^4.111=(111^4.3^4)^111=(111^4.81)^111
B=444^333=(111.4)^111.3=(111^3.4^3)^111=(111^3.64)^111
Vì 111^4.81 >111^3.64 nên A>B
cho mình 1k nhé bạn
333^444=(3.111)^4.111=(81.111)^111 (1)
444^333=(4.111)^3.111=(64.111)^111 (2)
Vì 81>64 nên (1)>(2)
=> 333^444>444^333
333444 và 444333
Ta có : 333444 = ( 111 . 3 )111.4 = ( 1114 . 34 ) 111 = ( 1114 . 81 )111
444333 = ( 111 . 4 )111.3 = ( 1113 . 43 )111 = ( 1113 . 64 )111
Mà 1114 . 81 > 1113 . 64
=> 333444 > 444333
a) Ta có : \(10^{30}=\left(10^3\right)^{10}=1000^{10}\)
\(2^{100}=\left(2^{10}\right)^{10}=1024^{10}\)
mà \(1000< 1024\)
\(\Rightarrow1000^{10}< 1024^{10}\)
\(\Rightarrow10^{30}< 2^{100}\)
b) Ta có : \(333^{444}=\left(111.3\right)^{444}=111^{444}.3^{444}=111^{444}.\left(3^4\right)^{111}=111^{444}.81^{111}\)
\(444^{333}=\left(111.4\right)^{333}=111^{333}.4^{333}=111^{333}.\left(4^3\right)^{111}=111^{333}.64^{111}\)
mà \(444>333\Rightarrow111^{444}>111^{333}\)
và \(81>64\Rightarrow81^{111}>64^{111}\)
\(\Rightarrow111^{444}.81^{111}>111^{333}.64^{111}\)
\(\Rightarrow333^{444}>444^{333}\)
c) Ta có : \(2^{161}>2^{160}=\left(2^4\right)^{40}=16^{40}>13^{40}\)
\(\Rightarrow2^{161}>13^{40}\)
d) Ta có : \(3^{453}>3^{450}=\left(3^3\right)^{150}=27^{150}>25^{150}=\left(5^2\right)^{150}=5^{300}\)
\(\Rightarrow3^{453}>5^{300}\)
Bài giải
a, \(3^{450}=\left(3^3\right)^{150}=9^{150}\)
\(5^{300}=\left(5^2\right)^{150}=25^{150}\)
\(\text{Vì }9^{150}< 25^{150}\) \(\Rightarrow\text{ }3^{450}< 5^{300}\)
b, \(333^{444}=\left(333^4\right)^{111}=12296370321^{111}\)
\(444^{333}=\left(444^3\right)^{111}=87528384^{111}\)
Vì \(12296370321^{111}>87528384^{111}\) \(\Rightarrow\text{ }333^{444}>444^{333}\)
Bài giải
a, \(3^{450}=\left(3^3\right)^{150}=9^{150}\)
\(5^{300}=\left(5^2\right)^{150}=25^{150}\)
\(\text{Vì }9^{150}< 25^{150}\) \(\Rightarrow\text{ }3^{450}< 5^{300}\)
b, \(333^{444}=\left(333^4\right)^{111}=12296370321^{111}\)
\(444^{333}=\left(444^3\right)^{111}=87528384^{111}\)
Vì \(12296370321^{111}>87528384^{111}\) \(\Rightarrow\text{ }333^{444}>444^{333}\)
C=3450 và D=5300
C=3450=(33)150=27150
D=5300=(52)150=25150
Vì C=27150>D=25150
Nên:C=3450>D=5300
E=333444 và F=444333
E=333444 = (3.111)4.111 = (81.1114)111
F=444333 = (4.111)3.111 = (64.1113)111
Vì E=(81.1114)111 > F(64.1113)111 nên E=333444 > F=444333
a. 3450 = (33)150 = 27150;
5300 = (52)150 = 25150
Vì 27150 > 25150
=> 3450 > 5300.
b. 333444 = (3.111)444 = 3444.111444 =(34)111.111444=81111.111444
444333=(4.111)333=4333.111333=(43)111.111333=64111.111333
Vì 81111 > 64111 và 111444 > 111333
=> 81111.111444 > 64111.111333
=> 333444 > 444333.
c. 2014.2016
= 2014.(2015+1)
= 2014.2015+2014 (1)
20152
=2015.2015
=2015.(2014+1)
=2015.2014+2015 (2)
Từ (1) và (2) => 2014.2016 < 20152.
b) 333\(^{444}\)và 444\(^{333}\)
Ta có :333\(^{444}\)(3.111)\(^{4.111}\)=(3\(^4\).111\(^4\))\(^{111}\)=(81.111\(^4\)).111
444\(^{333}\)(4.111)\(^{3.111}\)=4\(^3\).111\(^2\))\(^{111}\)=(64.111\(^3\))\(^{111}\)
vì 81>64 ; 111\(^4\)>111\(^3\) nêb (81.111\(^4\))\(^{111}\)>(64.113\(^3\))\(^{111}\)
hay 333\(^{444}\)>444\(^{333}\)
\(444^{33}hay444^{333}\)
Mình làm 333 nha.
\(333^{444}=\left(333^4\right)^{111}=12296370321^{111}\)
\(444^{333}=\left(444^3\right)^{111}=87528384^{111}\)
Ta thấy: 12296370321>87528384=> 12296370321111>87528384111
=> \(333^{444}>444^{333}\)
\(300^{444}=300^{4\cdot111}=\overline{.....0}\)
\(444^{33}=444^{4\cdot8+1}\)
\(=444^{4\cdot8}\cdot4^1\)
\(=\overline{.....6}\cdot4=\overline{......4}\)
Mà \(\overline{.....0}< \overline{.....4}\)nên \(300^{4\cdot111}< 444^{4\cdot8+1}\)hay \(300^{444}< 444^{33}\)