The function is
.
The denominator is zero when x = 1.
\So, the domain of f is all real numbers except x = 1.
\To determine the behavior of f near this excluded value, evaluate f(x) to the left and right of x = 1.
The domain of f is all real numbers except x = 1.
\The function is
.
Make the table : 1
\| \
x \ | \
\
| \
| \
0.5 \ | \
\
| \
| \
0.9 \ | \
\
| \
| \
0.99 \ | \
\
| \
| \
0.999 \ | \
\
| \
Make the table : 2
\| \
x \ | \
\
| \
| \
1.5 \ | \
\
| \
| \
1.1 \ | \
\
| \
| \
1.01 \ | \
\
| \
| \
1.001 \ | \
\
| \
Make the table : 3
\| \
x \ | \
\
| \
| \
| \
\
| \
| \
| \
\
| \
| \
| \
\
| \
| \
| \
\
| \
Make the table : 4
\| \
x \ | \
\
| \
| \
| \
\
| \
| \
| \
\
| \
| \
| \
\
| \
| \
| \
\
| \
\
The function is
.
The denominator is zero when x = 1.
\So, the domain of f is all real numbers except x = 1.
\To determine the behavior of f near this excluded value, evaluate f(x) to the left and right of x = 1.
\Obsrve the tables x approaches 1 from the left, f(x) decreases without bound. In contrast, as x approaches 1 from the right, f(x) increase without bound.
The behavior of f near x = 1 is
.