so sánh \(^{4^{30}}\) và \(3\cdot24^{10}\)
so sánh \(2^{30}+3^{20}+4^{30}và3\cdot24^{10}\)
so sánh \(2^{30}+3^{20}+4^{30}và3\cdot24^{10}\)
so sánh
\(2^{30}+3^{20}+4^{30}\)và \(3\cdot24^{10}\)
So sánh \(2^{10}\)+\(3^{20}\)+\(4^{30}\)và \(3\cdot24^{10}\)
1024+3486784401+1.152921505.\(10^{18}\)và 3.6.340338097.\(10^{13}\)
1.152921508.\(10^{18}\) , 1.902101429.\(10^{14}\)
v
Chúc bạn hoc giỏi
Ta có :
\(3.24^{10}=3.\left(2^3.3\right)^{10}=3^{11}.2^{30}=3^{11}.4^{15}< 4^{15}.4^{15}=4^{30}\)
\(\Rightarrow2^{10}+3^{20}+4^{30}>3.24^{10}\)
Vậy \(2^{10}+3^{20}+4^{30}>3.24^{10}\)
_Chúc bạn học tốt_
so sánh \(2^{30}+3^{30}+4^{30}\)và \(3\cdot24^{10}\)
Chứng minh: \(\left(24^{54}\cdot54^{24}\cdot2^{10}\right)\) chia hết cho \(\left(72^{63}\right)\)
so sánh \(2^{300}+3^{300}+4^{300}\)và \(729\cdot24^{100}\)
Rút gọn rồi so sánh
A=\(\dfrac{8056}{2012\cdot16-1982}\)
B=\(\dfrac{1\cdot2\cdot6+2\cdot4\cdot12+4\cdot8\cdot24+7\cdot14\cdot42}{1\cdot6\cdot9+2\cdot12\cdot18+4\cdot24\cdot36+7\cdot42\cdot63}\)
So sánh A và B
\(A=\frac{8056}{2012.16-1982}\)= \(\frac{2014.4}{2012.15+2012-1982}\)=\(\frac{2014.4}{2012.15+30}\)=\(\frac{2014.4}{2012.15+2.15}\)=\(\frac{2014.4}{15.\left(2012+2\right)}=\frac{2014.4}{15.2014}=\frac{4}{15}\)
B = \(\frac{1.2.6+2.4.12+4.8.24+7.14.42}{1.6.9+2.12.18+4.24.36+7.42.63}\)
= \(\frac{1.2.3.2+2.2.2.12+4.4.2.24+7.7.2.42}{1.2.3.9+2.12.2.9+4.24.4.9+7.42.7.9}\)
= \(\frac{2\left(1.2.3+2.2.12+4.4.24+7.7.42\right)}{9\left(1.2.3+2.2.12+4.4.24+7.7.42\right)}\)
= \(\frac{2}{9}\)
Ta có: \(\frac{4}{15}=\frac{4.3}{15.3}=\frac{12}{45};\frac{2}{9}=\frac{2.5}{9.5}=\frac{10}{45}\)
Vì \(\frac{12}{45}>\frac{10}{45}\Rightarrow\frac{4}{15}>\frac{2}{9}\Rightarrow A>B\)
Vậy A > B
SO SÁNH 2^30 +3^30+4^30 và 3.24^10
4^30=2^30*2^30
=2^30*4^15
3*24^10=3*3^10*8^10=3^11*2^30
mà 4^30>3^11
nên 2^30+3^30+4^30>3*24^10
Ta có: 4^30=2^30.2^30=2^30.4^15
3.24^10=3.(3.2^3)^10=2^30.3^11
Ta thấy: 3^11<3^15<4^15 => 4^15>3^11
Vì 4^15>3^11 nên 2^30.4^15>2^30.3^11
=>2^30+3^30+4^30>3.24^10
so sánh: 2^30+3^30+4^30 và 3*24^10