# Does a hole mean undefined?

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A hole is a point on the graph where the value of the function is not defined. If the numerator and denominator of a rational function have a common factor, they will cancel when simplifying. The cancelled value creates a hole in the graph.
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## Where does a limit not exist?

Tip: Technically, a limit doesn’t exist if the value at that function is infinity. But knowing that a number approaches infinity at a certain point is extremely useful, so we say that: lim f(x) = ∞.

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## Does a hole have to be circle?

No. A hole is just a lack of material through something. It could be a inverted dome, a square, a trapezoid, whatever. It’s a hole either way.
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## Does limit exist if zero?

Yes, 0 can be a limit, just like with any other real number. Thanks. A limit is not restricted to a real number, they can be complex too…
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## Is 0 0 a hole?

4) When we look for y-intercepts we get (0, 0). However, this is also a hole, so there is not a y-intercept. 5) When we look for x-intercepts we get (0,0) and (-1,0). Again (0,0) is a hole so it is not an x-intercept.
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## What are the 3 conditions for a limit to exist?

Note that in order for a function to be continuous at a point, three things must be true:
• The limit must exist at that point.
• The function must be defined at that point, and.
• The limit and the function must have equal values at that point.

## Can a limit be undefined?

Can a Limit be Undefined? The limit of a function is not always defined. In algebra, an undefined expression means a finite value does not exist, and an undefined limit is similarly defined. A limit is undefined if there is not a finite value that can be found for the limit.
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## Does limit exist at infinity?

Warning: when we say a limit =∞, technically the limit doesn’t exist. limx→af(x)=L makes sense (technically) only if L is a number.
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## How do you solve a limit with a hole?

Use the graph, estimate the limit as x approaches -1. The function f above is undefined for x=-1. By simplifying f(x) we find a function whose graph agrees with f(x) at every point except -1.
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## Can a function be defined at a hole?

A hole on a graph looks like a hollow circle. It represents the fact that the function approaches the point, but is not actually defined on that precise value. The reason why this function is not defined at is because is not in the domain of the function.
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## What are three cases where a limit does not exist?

A limit does not exist in the following cases: Left Hand Limit Does Not Exist. Right Hand Limit Does Not Exist. Left & Right Hand Limits Both Exist, But They Have Different Values.
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## Is a limit undefined at a hole?

If there is a removable discontinuity (also known as a ‘hole’) in the curve of the graph at x = c, then the limit does exist on the graph of a function. Below is the example of this: Notice that although the limit of F(x) as x approaches 1 is y = ⅓, the value of f(1) does not exist.
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## Does a hole mean not continuous?

A continuous function can be represented by a graph without holes or breaks. A function whose graph has holes is a discontinuous function.
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## Why does a limit not exist?

In short, the limit does not exist if there is a lack of continuity in the neighbourhood about the value of interest. Recall that there doesn’t need to be continuity at the value of interest, just the neighbourhood is required.
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## Is a function differentiable at a hole?

Most mathematicians will define the derivative of a function f at a point x as: . Using that definition, your function with “holes” won’t be differentiable because f(5) = 5 and for h ≠ 0, which obviously diverges.
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## Is a limit the same as a hole?

HoleA hole exists on the graph of a rational function at any input value that causes both the numerator and denominator of the function to be equal to zero. limitA limit is the value that the output of a function approaches as the input of the function approaches a given value.
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## Can a limit exist and not be continuous?

No, a function can be discontinuous and have a limit. The limit is precisely the continuation that can make it continuous.
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## How rare is a hole in one?

1. Hole-in-One or Ace. According to the National Hole-in-One Registry, the odds of the average golfer making a hole-in-one are 12,500 to 1.
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## Does a limit exist at an open circle?

Nope. The open circle does mean the function is undefined at that particular x-value. However, limits do not care what is actually going on at the value. Limits only care about what happens as we approach it.
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## Do unbounded limits exist?

Introducing the notion of a limit that is unbounded. These limits don’t exist in the strict sense, but we can still say something about them that makes clear how they behave.
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## Can a limit exist at a point?

A limit of a real-valued function defined only at one point does not exist, such as wikipedia defines limits. The limit value of a function at a point c is defined from the function values of points arbitrarily close to, but not equal to c. An example would be the function that has f(0)=1 and is 0 everywhere else.
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## Can a limit be continuous at a hole?

If there is a hole in the graph at the value that x is approaching, with no other point for a different value of the function, then the limit does still exist.
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## Why does a limit exist at a hole?

Hole in a graph represents discontinuity. Illustration: If a function is continuous at a point, we can say that its limit exists. On the other hand, if a function is discontinuous at a point, we cannot directly say that its limit does not exist.
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## Can a limit exist at a hole?

If there is a removable discontinuity (also known as a ‘hole’) in the curve of the graph at x = c, then the limit does exist on the graph of a function.