Answer
Local Minimum is y=2.807 when x= -0.46
Local Maximum is y=3.793 when x = 0.46
Work Step by Step
Graph the function $f(x) = 3.3 + 1.6x - 2.5x^3$
See graph below (graph from desmos)
Calculate local maximum and minimum using a calculator (or desmos, which gives it to you (notice the gray dots!)
Local Minimum is y=2.82 when x= -0.46
Local maximum is y=3.80 when x = 0.46
