11: The domain is D( f ) = ℝ.
The derivative is

Critical points: The equation f ′(x) = 0 has solution x = 2.
The derivative does not exist at x = 0 and x = 0.

Intervals of monotonicity will be (−∞,0], [0,2], [2,3], and [3,∞). Determine monotonicity and local extrema using a chart.

Next hint
Answer