11. Which statement is/are true about functions:
A. A function is a relation.
B. Some relations are not functions
C. Only one-to-one correspondence and many-to-one correspondence are functions.
D. all of the above
A. A function is a relation.
B. Some relations are not functions
C. Only one-to-one correspondence and many-to-one correspondence are functions.
D. all of the above
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Answer:
A.
Step-by-step explanation:
A technical definition of a function is: a relation from a set of inputs to a set of possible outputs where each input is related to exactly one output. ... We can write the statement that f is a function from X to Y using the function notation f:X→Y.