Let A={(x,y);x,yϵR,x2+y2≥25} B={(x,y);x,yϵR,9y≤4x2} then
Let R ={(x,y):x,y∈ R,x2+y2≤25}R′={(x,y):x,y∈ R,y≥49x2}then
Figure shows a relation between set P and Q such that x ∈ P, y ∈ Q. What is the relation, domain and range?