3.[7] Let A(x) = So f(t)dt, where f (x) is given in the graphs below, for 0 S x $ 6. y = f (x) NO - N X 2 3 4 5 6 (a)[3] Find A(2), A(4) (b)[4] Use FTC to find A' (x) then compute the (i) maximum, and (ii) minimum values of A(x) on its domain