Các câu hỏi tương tự
cho ham so \(y=f\left(x\right)=ax^2+bx+c\)(a;b;c thuoc Q)
chung to rang f(-2)*f(3) nho hon hoac bang 0, biet rang 13a+b+2c=0
Gia su x = a/m;y = b/m (a;b;m thuoc Z;m>0) va x< y. Hay chung to rang neu chon z = a+b/2m thi ta co x<y<z
gia su x=a/m,y=b/m (a,b,m thuoc Z,m>0) va x>y.Hay chung to rang neu chon z=a+b/2m thi ta co x<z<y
giả su x =a/m , y = b/m (a,b thuoc z, m >0) va x <y. hay chung to rang neu chon z=a+b/2m thi ta co x<z <y
giai gium minh voi
Gia su \(x=\frac{a}{m},y=\frac{b}{m}\)va x<y.Hay chung to rang neu chon \(z=\frac{a+b}{2m}\)thi ta co x<y<z
Su dung tinh chat neu a,b,c thuoc zva a<b thi a+c<b+c
giup mik voi nha tik cho cam on
Cho x , y thuoc Q. Chung minh : | x | + | y | > | x + y |
De qua nhi !
tim cac so x,y,z thuoc Q biet rang (x+y):(5-z):(y+z):(y+9)=3:1:2:5
Cho x/y=-2019,chung to rang: x+y/x-y<1<x-y/x+y voi y khac 0 va x khac + y
gia su x=a/m, y=b/m (a,b,m thuoc z, m>0) va x<y.hay chung to rang neu chon z=a+b/2m thi ta co x<z<y.
minh moi hoc lop 7 minh ko hieu bai nay ai giai giup minh voi