Answer the following and box the final answer.

3. Find the derivative of the function f(x) = ln(coth 3x (2861295) 4. A particle is moving along a straight line according to the equation of motion 3(t) = 65mm sinh 3t B cosh 2:) where S is the directed distance of the particle from the origin at 1' sec. Find the acceleration of the particle at any time t