There is a typo, professor says:

Let g(x)=the integral of f(x)

6. (20 points) The graph of f below consists of line segments and semicircles. Let So f (t) dt. 2 0 2 4 6 8 10 12 14 16 x Answer the following questions: (a) (6pts) Find g(12) (b) (6pts) Find g' (6) (c) (8pts) For what a value(s) is g"(z) = -1? (Approximation is fine.)