
How do you find vertical asymptotes using limits?
Answer
466.2k+ views
Hint:
Given an equation. We have to find the vertical asymptotes using the limits. First, we will apply the limits to the curve . Then, substitute the value of limit into the variable x and find the value of the function.
Complete step by step solution:
An asymptote is basically a line which the graph of a particular function approaches but never touches. A particular function has two types of asymptotes horizontal and vertical.
The vertical line is defined as to the curve of the function .
Then, we will apply the limits to the function.
and
The vertical line is known as a vertical asymptote if either
or
Therefore, we have to determine the value of k such that either left hand limit or right hand limit will be .
For example, consider a function
To find the vertical asymptotes of the function, apply the limits to the function,
and
Now, we will substitute the limit to the function.
and
Therefore, at the function has a vertical asymptote.
Note:
The students please note that the vertical asymptotes are parallel to the y-axis when x approaches any constant value c, whereas the horizontal asymptotes are parallel to the x-axis. To find the vertical asymptotes of a rational function, we will set the denominator equal to zero and apply the limits to the expression. The students must remember that there are some functions for which the vertical asymptotes do not exist, such as the exponential function because exponent x may have any value.
Given an equation. We have to find the vertical asymptotes using the limits. First, we will apply the limits to the curve
Complete step by step solution:
An asymptote is basically a line which the graph of a particular function approaches but never touches. A particular function has two types of asymptotes horizontal and vertical.
The vertical line is defined as
Then, we will apply the limits to the function.
The vertical line
Therefore, we have to determine the value of k such that either left hand limit or right hand limit will be
For example, consider a function
To find the vertical asymptotes of the function, apply the limits to the function,
Now, we will substitute the limit to the function.
Therefore, at
Note:
The students please note that the vertical asymptotes are parallel to the y-axis when x approaches any constant value c, whereas the horizontal asymptotes are parallel to the x-axis. To find the vertical asymptotes of a rational function, we will set the denominator equal to zero and apply the limits to the expression. The students must remember that there are some functions for which the vertical asymptotes do not exist, such as the exponential function because exponent x may have any value.
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