Open Circle Vs Closed Circle

In calculus, what does an open circle (at a point) mean compared to a closed circle when looking for a boundary? 3

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So if I assume that I have found the limit of f (x) when x appears 2 from the left and this point is 0 and at this point (y = 0) is a closed circle, is this limit still available?

ہاں Yes, what did he say? An open circle means that the limit of x = n is close to the number, but not the real point. A closed circle, like any other shaded circle on the graph, means that it is a point on the graph.

Edit: Yes, there will be a limit to answer your question. Is a point (closed circle) as long as the boundary values are equal to left and right. Since the limit value is 0 when x 2 appears and there is a closed circle, there will always be a limit value.

Open Circle Vs Closed Circle

I repeat someone's answer. This is a disconnected point, which means that the value does not exist at this point, although the limit still exists. If the intersection point is part of a part and that part is applied to that point by both sides, then there is a limit. Otherwise the possibility of a unilateral limit.
If you see a jump from one open circle to another on the chart, this is the best example of a one-way limit.
But, in short, an open circle simply means that this specific value does not exist. If you see a 0-1 line on the x-axis whose circle is open at 1, then all the values of this function are at 0, 0.9, 0.99, 0.999, and so on. As close to one as possible, but never add 1.
An open circle is a time constraint. There is a limit to this point, but the point itself is not.