Given
The graph of derivative of the function is given.
Required
The intervals where the function is increasing.
Explanation
To determine the function is increasing, the derivative of the function should be greater than zero.
From the given graph it is clear that the derivative of the function is greater than zero for the interval
[tex](0,4)[/tex]Answer
Hence the function is increasing in the interval (0,4).
The correct option is D.
