Discrete Structures Chapter 4: Functions Question and answers verified to pass 2026

Discrete Structures Chapter 4: Functions Question and
answers verified to pass 2026
1.function A f that maps elements of a set X to elements of a set Y, is a
subset of X × Y
such that for every x X, there is exactly one y Y for which
(x, y) f.




2. function f: X ’Y is the notation to express the fact that f is a from X to Y.

3. domai The set X is called the of f, and the set Y is the of f.
n

target
4. co-domain An alternate word for target that is sometimes used is .




5. well-defined If f maps an element of the domain to zero elements or more than one
element
of the target, then f is not .

6. arrow diagram In an for a function f, the elements of the domain X are listed on the
left and
the elements of the target Y are listed on the right. There is an arrow from
x X to y Y if and only if (x, y) f.




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, Discrete Structures Chapter 4: Functions Question and
answers verified to pass 2026




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