Practice Demo

$_f(x)_$ is plotted below. List all real values of $_x_$ for which $_f(x)_$ is discontinuous. Separate values with commas. Enter $_\text{NONE}_$ if there are no such values.
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Preview your answer:

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Hint 1: We are looking for all real of $_x_$ at which there are removable, jump, and infinite discontinuities on the graph of $_f(x)_$.

Solution:

Looking at the graph, we see that $_f(x)_$ is discontinuous at:

$$2$$