Answer:
(-pi, 0)
Step-by-step explanation:
From the graph, we have 3 stationary point; the first one at x = 0, the second one at x = 1 and the last one at x = 2.
The function is increasing at two intervals.
The first increase is between x = -1 and x = 0.
The second increase is between x = 1 and x = 2.
From the choices give the interval that represent increase is (-pi, 0)
