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Consider the function f($) = 43: In (4:12) For the domain on which f is defined, determine the following: (Type innity for 00.) (a) The largest open interval on which f is decreasing ( as, so) (b) The largest open interval on which f is increasing ( so, so) The position of a mass oscillating in a fluid is given by m) = 2e_tcos(%) where t is time in seconds. Determine the velocity of the mass at t = 2.3 seconds rounded off to three decimal places. (Fact: The velocity of an object is equal to the rst derivative of its position with respect to time.) 'U(2.3) : Number