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# Representing undefined points on a graph watch

1. How do you represent an undefined point on a graph? For example, y = sin(x) / x tends towards y - > 1 for x -> 0, but at 0 the function is undefined. Just curious about how this should be represented on a graph.
2. (Original post by AHappyStudent)
How do you represent an undefined point on a graph? For example, y = sin(x) / x tends towards y - > 1 for x -> 0, but at 0 the function is undefined. Just curious about how this should be represented on a graph.
Normally you just draw a little circle where the undefined point is to represent that the function is not defined at that point.
3. (Original post by B_9710)
Normally you just draw a little circle where the undefined point is to represent that the function is not defined at that point.
Okay, thanks
4. (Original post by AHappyStudent)
Okay, thanks

Like this if it's not clear.

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