$\"\"$

The function $\"\"$ .

Observe the graph:

The function is discontinuous at $\"\"$ .

The function is continuous for all values of $\"\"$ , except at $\"\"$ .

$\"\"$

The domain of a function is all values of $\"\"$ , those makes the function mathematically correct .

Denominator of the function should not be zero.

$\"\"$ .

The domain of $\"\"$ is all real numbers except at $\"\"$ .

The function $\"\"$ is continuous at every value of $\"\"$ except $\"\"$ .

The discontinuity at $\"\"$ .

$\"\"$

Discontinuous at $\"\"$ .