a,ve do thi ham so y=\(\dfrac{-3}{2}\)x và y=\(\dfrac{2}{3}\)x tren cung 1 he trục toa do
b,tren do thi ham so y=\(\dfrac{-3}{2}\)x lay diem A co hoanh do la 2 ,Tren do thi ham so y=\(\dfrac{2}{3}\)x,lay diem C co hoanh do la 3.Đo goc AOC,sao do bieu dien B tren mat phang toa do sao cho OABC la hinh vuong