(4) When interest is compounded continuously the amount of moncy S incrcases at a rate proportional to the amount present at any time: dS/dt = rS where r is the annual rate of interest. %3D (a) Find the amount accrued at the cnd of 5 ycars when AED 5000 is deposited in a savings account drawing 5% annual interest compounded continuously. (6) In how many years will the initial sum deposited be double?