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Is it a function or not a function?

Is it a function or not a function?-example-1
User Blackkara
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2 Answers

21 votes
21 votes

Answer:

No a circle is not a function.

Explanation:

A function is a mapping from 1 set to another

eg, 1 to 2

3 to 4

while a circle it maps the same point to another

meaning it has more than two input/output

(if u get what i mean)

User Songhir
by
2.8k points
13 votes
13 votes

Answer:

Not a function

Explanation:

Fails the vertical line test