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\(5^{444}=\left(5^4\right)^{111}=625^{111}\)
\(4^{555}=\left(4^5\right)^{111}=1024^{111}\)
Vì \(625<1024\text{ nên }625^{111}<1024^{111}\)
Vậy \(5^{444}<4^{555}\).
444 mũ 555 =(4 nhân 111) mũ 555 = ((4^5 x 111)^111 x 111^444
555 mũ 444 = (5 nhân 111) mũ 444 = (5^4)^111 x 111^444
suy ra 444 mũ 555 > 555 mũ 444
Phần D 10^30=(10^3)^10
2^100 = (2^10)^10
suy ra 10^30<2^100
444^5= (111^4)^5=11^20
555^4= (111^5)^4=111^20
=) 444^5=555^4
\(444^5=\left(444^{\frac{5}{4}}\right)^4\approx2038^4\)
vì:\(2038^4>555^4\Rightarrow444^5>555^4\)
\(\text{Bài hồi nãy mình giải lộn rồi đúng là như thế này}\)
\(5^{444}=\left(5^4\right)^{111}=625^{111}\)
\(4^{555}=\left(4^5\right)^{111}=1024^{111}\)
\(\text{Vì}\)\(625^{111}< 1024^{111}\)
\(\text{Nên}\)\(5^{444}< 4^{555}\)
\(5^{444}=\left(5^4\right)^{111}=625^{111}\)
\(4^{555}=\left(4^5\right)^{111}=256^{111}\)
\(\text{Vì}\)\(625^{111}>256^{111}\)
\(\text{Nên}\)\(5^{444}>4^{555}\)
Ta xét :
\(444^{555}=\left(444^5\right)^{111}=\left(111^5.4^5\right)^{111}=\left(111^5.1024\right)^{111}\)
\(555^{444}=\left(555^4\right)^{111}=\left(111^4.5^4\right)^{111}=\left(111^4.625\right)^{111}\)
Mà \(111^5.1024>111^4.625\)
\(\Rightarrow444^{555}>555^{444}\)
ta có: \(444^{555}=444^{\left(111\times5\right)}=\left(444^5\right)^{111}\)
\(555^{444}=555^{\left(111\times4\right)}=\left(555^4\right)^{111}\)
ta có: \(444^5=\left(4\times111\right)^5=4^5\times111^5\)= \(1024\times111\times111^4\)
\(555^4=\left(5\times111\right)^4=5^4\times111^4\) = \(625\times111^4\)
ta có: \(1024\times111\times111^4\) > \(625\times111^4\)
\(\Rightarrow\)\(444^5>555^4\)
mình làm hơi tắt bạn tự hoàn thiện nha.
Ta co :
3200 va 2300
3200=(32)100=9100
2300=(23)100=8100
Ma : 9100>8100
Vay suy ra 3200>2300
tu lm tiep nhe
a) 10243 = (83 . 2)3 = (83)3 . 8 = 89 . 8 = 810
Vì 10 < 30 nên 830 > 810. \(\Rightarrow\)10243 < 830
Vậy, 10243 < 830
a)
10243= (83 .2)3=89. 23= 89.8=810
ta thấy 830 > 810 => 830 > 10243
Vay 830 > 10243
b)
277 =(33)7 = 321
815= (34)5= 320
Ta thấy 321>320=> 277 > 815
Vay 277> 815
c)
4910 = (72)10 = 720
6255= (54) 5= 520
Ta thấy 720>520 => 4910> 6255
Vay 4910> 6255
d)
4444<5555
Ta có:
\(888^{444}=\left(2.444\right)^{444}=2^{444}.444^{444}\)
\(444^{888}=\left(444\right)^{444+444}=444^{444}.444^{444}\)
Vì \(444>2\)=> \(444^{444}>2^{444}\)=> \(444^{444}.444^{444}>2^{444}.444^{444}\)
Vậy nên \(444^{888}>888^{444}\)
Ta có:
\(\Rightarrow\)\(4^{555}>5^{444}\)