Questions and answers by

dreww1961

Questions (3)

Let f:A->B, where A and B are nonemptyProve that f(S1 - f(S2) is a proper subset of f(S1 -S2) fo all subsets S1 and S2 of A.
1. 0 answers
2. 1,114 views
Let f:A->B, where A and B are nonemptyProve that f(S1 - f(S2) is a proper subset of f(S1 -S2) fo all subsets S1 and S2 of A.
1. 0 answers
2. 666 views
Let f:A->B, where A and B are nonempty, and let T1 and T2 be subsets of B.a.Prove that f^-1(T1 U T2)= f^-1(T1) U f^-1(T2).
1. 0 answers
2. 604 views