Consider the relation R on the set {−2,−1,0,1,2} defined by (a,b)∈R iff 1+ab>0. Number of elements in R is 17; R is an equivalence relation
Consider the relation R on the set {−2,−1,0,1,2} defined by (a,b)∈R iff 1+ab>0. Number of elements in R is 17; […]