The derivative of a function f is defined by f'(x)={g(x) for -4≤x≤05e−x/3−3 for 0
The graph of the continuous function , f′ shown in the figure above, has x-intercepts at x = −2 and x = 3 ln (5/3). The graph of g on -4 ≤ x ≤ 0 is a semicircle, and f(0) = 5.

Find f(-4) and f(4).