cho \(x=\frac{3}{2}y=\frac{8}{3}\)
a, Bieu dien x,y tren 2 truc so khac nhau
b,Bieu dien x,y tren 1 truc so
cho \(x=\frac{3}{2}\) ;\(y=\frac{8}{3}\)
a) bieu dien x,y tren 2 truc so khac nhau
b)bieu dien x,y tren 1 truc so
Chung to rang tren truc so, giua hai diem bieu dien hai so huu ti khac nhau bao gio cung co it nhat 1 diem huu ti nua.
a,ve do thi cac ham so y=\(\frac{-3}{2}\)x va y=\(\frac{2}{3}\)x tren cung 1 he truc toa do
b,tren do thi ham so y=\(\frac{-3}{2}\)x lay diem A co hoanh do la 2.tren do thi ham so y=\(\frac{2}{3}\)x.Lay diem C co hoanh do la 3.do goc AOC,sau do bieu dien diem B tren mat phang toa do sao cho OABC la hinh vuong
Neu 3 cach viet cua so huu ti -3/5 va bieu dien no tren truc so
bieu dien so huu ti 3/-4 tren truc so
ve do thi ham so sau cung 1 he truc oxy y=3x , y=-2x tinh dien tich tam giac tao boi 2 do thi ham so tren va duong thang y = 3/2
bieu dien cac so 3/2 ; -5/2 ; 4/-3 tren truc so
cho hai ham so y=f(x)=|2x| va y=g(x)=3
a)ve tren cung mot he truc toa do Oxy do thi cua hai ham so do
b)dung do thi ham so tim cac gia tri cua x sao cho |2x|<3