Question

Let F: X maps onto Y and A and B be two subsets of X.
Prove the following:
a.) If AcB => F(A) U F(B)
b.) If (AUB) = F(A) U F(B)
c.) If (AnB) C F(A)nF(B)
Please help

Answer 1

How is F(A) U F(B) a statement

Answer 2

b. doesn't even make sense, you have "if" without "then"

Answer 3

same goes with c

Answer 4

F(A) is function of A and F(B) function of B

Answer 5

c represents subset