Answer:
Vertical asymptotes are at [tex]x=-1\ and\ x=1[/tex].
Step-by-step explanation:
The rational function is given as:
[tex]y=\frac{4x^2+1}{x^2-1}[/tex]
Vertical asymptotes are those values of [tex]x[/tex] for which the function is undefined or the graph moves towards infinity.
For a rational function, the vertical asymptotes can be determined by equating the denominator equal to zero and finding the values of [tex]x[/tex].
Here, the denominator is [tex]x^2-1[/tex]
Setting the denominator equal to zero, we get
[tex]x^2-1=0\\x^2=1\\x=\pm \sqrt{1}\\ x= -1\ and\ x = 1[/tex]
Therefore, the vertical asymptotes occur at [tex]x=-1\ and\ x=1[/tex].