1. Suppose money accumulates using the accumulation function a(t) = 1 + 0.044t2 where t is in years.
Calculate the effective rate of interest in the 6th year. Write your answer as a decimal to 4 significant digits.
2. Suppose that money accumulates according to the accumulation function a(t) = 1 + 0.08t + 0.01t2
Find the force of interest at time 3.. Write your answer as a decimal to 4 significant digits.