a, Cho a, b , n thuoc N*. Hay so sanh a + n/ b + n voi a/b
B Cho A= 1011 - 1/ 1012 - 1 va B= 1010+ 1/ 1011+ 1. Hay so sanh Avoi B
cho a,b,m thuoc N
hay so sanh a+m/b+m voi a/b
a)cho a,b,n thuoc N*.hay so a=n/b=n va a/b so sanh
b)choA=10^11-1/10^12-1;B=10^10+1/10^11+1.So sanh A va B
lay Othuoc xy
a' viet ten cac tia doi nhau
b , lay Athuoc Ox , B thuoc Oy . Khi do Ava B nam cung phia hay khac phia doi voi O suy ra diem nao nam giua hai diem con lai
c , cho biet OA = 3 cm , AB= 6 cm tinh OB so sanh OA voi OB diem nao la trung diem cua AB
lay o thuoc xy
a , viet ten cac tia doi nhau .
b , lay Athuoc ox , B thuoc oy . khi do A va B nam cung phia hay khac phia doi voi O , suy ra diem nao nam giua hai diem con lai
c , cho biey OA =3cm AB = 6cm tinh ob so sanh OA voi OB tu do suy ra diem nao la trung diem cua AB
So sanh 2 voi a/(b+c)+b/(a+c)+c/(a+b)
a)Cho a,b,n thuoc N*.Hay so sanh$\frac{a+n}{b+n}$a+nb+n va $\frac{a}{b}$ab
b)Cho A=$\frac{10^{11}-1}{10^{12}-1}$1011−11012−1
B=$\frac{10^{10}+1}{10^{11}+1}$1010+11011+1
Hay so sanh A va B
a)Cho a,b,n thuoc N*.Hay so sanh\(\frac{a+n}{b+n}\) va \(\frac{a}{b}\)
b)Cho A=\(\frac{10^{11}-1}{10^{12}-1}\)
B=\(\frac{10^{10}+1}{10^{11}+1}\)
Hay so sanh A va B
1.Tim n thuoc Z de 2n-1/3n+2 rut gon duoc
2.So sanh: a, A=13579/34567 va B=13580/34569
b, A=35420/35425 va B=25343/25345
3. Tim cac so tu nhien abcd nho nhat sao cho: a/b=5/14 , b/c=21/28 , c/d=6/11