# 1. What is a function f from set A to set B, where A = {1, 2, 3} ...

## Question

1. What is a function f from set A to set B, where
A = {1, 2, 3}
B = {x, y}

2. Let f : A -> B be a function from A to B.
f = {(w, 1), (x, 2), (y, 3), (z, 2)}
What is the domain of f?

3. Let f : A -> B be a function from A to B.
f = {(w, 1), (x, 2), (y, 3), (z, 2)}
What is the target of f?

4. Let f : A -> B be a function from A to B.
f = {(w, 1), (x, 2), (y, 3), (z, 2)}
What is the range of f (rng f)?

5. Let f: A ->B be a function from A to B
For any b ∈ B the equation b = f(x) has a solution x ∈ A.
Is f onto or one-to-one function?

## Solution Preview

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1.
f:A->B thus f is an association relation between sets A and B such that for each element from set A corresponds one element from set B....

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