15. 10 pts possible Determine f(t) when . 1. f (t) = 6+3+ +2 - 2t - 1 f" (t) = 2(6t + 1) 0 2. f (t) = 6+3 - 212 + 2t - 2 and f'(1) = 6, f(1) = 4. 0 3. f (t) = 6+3 + 212 - 2t - 2 4. f (t) = 2+3 + 12 - 21 + 3 5. f (t) = 2+3 - 12 + 2t + 1 . 6. f (t) = 2+3 - 2+2 + 2t+ 2