Find all points of discontinuity, and determine whether there is a hole or a vertical asymptote at each point.
-$f ( x ) = \frac { x - 1 } { x ^ { 2 } - 1 }$
A)-1: hole; 1: vertical asymptote
B)1: hole; -1: vertical asymptote
C)-1: vertical asymptote
D)1: vertical asymptote

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The Answer of Find all points of discontinuity, and determine whether there is a hole or a vertical asymptote at each point.
-$f ( x ) = \frac { x - 1 } { x ^ { 2 } - 1 }$
A)-1: hole; 1: vertical asymptote
B)1: hole; -1: vertical asymptote
C)-1: vertical asymptote
D)1: vertical asymptote

Find All Points of Discontinuity, and Determine Whether There Is f(x)=x−1x2−1f ( x ) = \frac { x - 1 } { x ^ { 2 } - 1 }f(x)=x2−1x−1​

Find All Points of Discontinuity, and Determine Whether There Is $f ( x ) = \frac { x - 1 } { x ^ { 2 } - 1 }$