viet cac so sau duoi dang luy thua cua 1 so:
\(a)-\frac{8}{27}\)
\(b)\frac{81}{625}\)
viet cac tich sau duoi dang luy thua cua 1 so:
\(a)27.81\)
\(b)\frac{2}{5}.\frac{8}{125}.\frac{16}{625}\)
1) Viet cac so 2 mu 27 va 3 mu 18 duoi dang luy thua co so mu la9
Viet cac so (0,25)^8 va (0,125)^4 duoi dang cac luy thua cua co so 0 ,5
Viet tich sau duoi dang luy thua
2/3×4/9×8/27
Ghi cach giai ra gium minh voi
viet cac so 2mu27 va 3mu18 duoi dang cac luy thua co so mu la 9
A)viet cac so 2^27 va 3^18 duoi dang cac luy rhua co so mu la 9
B)trong hai so 2^27 va 3^18 so nao lon hon
I.Dai so:
Cau1. Gia tri tuyet doi cua so huu ti x duoc xac dinh nhu the nao?
Cau2. Viet cac cong thuc:nhan, chia hai luy thua cung co so. luy thua cua: luy thua, mot tich, mot thuong.
cau3. Ti le thuc la gi? Tinh chat co ban cua ti le thuc. Viet cong thuc tinh chat cua day ti so bang nhau.
cau4. Dinh nghia can bac hai cua mot so am? cho vi du?
Cau 5 Khi nao thi hai dai luong y va x ti le thuan voi nhau? Tinh chat cua hai dai luong ti le thuan ?
Cau 6:Khi nao thi hai dai luong y va x ti le nghich voi nhau? Tinh chat cua hai dai luong ti le nghich?
Cau 7:Do thi cua ham so y= ax ( a khac 0) co dang nhu the nao?
et cac so sau day 0,258 va 01254 duoi dang luy thua 0,5
Viet cac tich sau duoi dang luy thua:
a) \(4^{20}\)x \(8^{10}\)
b) \(81^{10}\)x \(27^8\)
c) \(a^{12}:a^8\)