Find the intervals where the function
\(f(x) = \left |1 + \frac{1}
{x}\right |\) is an increasing
function. The function \(f\)
is graphed in the picture.
Identify the picture that shows the correct solution set of the following inequality. In each picture, the set of points corresponding to the solution set is marked in red.
\[
\frac{4}
{x}\leq x
\]