6. suppose f: r r is a twice differentiable function such that f" is continuous and f(0) 1, f (0) =3. "(0) =5. which of the following limit exists? (a) lim-2)-f

6. Suppose f: R R is a twice differentiable function such that f" is continuous and f(0) 1, f (0) =3. "(0) =5. Which of the following limit exists? (a) lim-2)-f(3h) +2 (b) lim-02)-f-Bh)-21h () lim,-- +-3h)-2 (d) lim,--1+2h)-2f(3h)+2h h