Use the information given in the table to find the following derivatives. X 0 f (x ) w/ - 6 UI 2 f' (x ) -3 20 f" (x ) 4 7 -8 N/ - All answers are integers. a) If R (x) = (tan x) f (x) then R' (" ) = b) If h (x) = sec x f ( x ) then h (It) = c) If L ( x ) = J ( x) cos x then L' (0) =