9.1. Actuarial Math: Introduction to Benefit Reserves A

Benefit reserve continuous case, prospective reserving method, retrospective reserving method

Typos:
At 12:31 there should be a 't' proceeding V i.e. tV(Ax) (with bars on V and A indicating continuous case)
At 23:35 in calculating Var[10L], the premium P_bar(A_bar_30) should be 0.019165 instead of 0.01965. With this premium, V[10L] should be 0.12616 instead of 0.12797.
At 32:18, as these reserve formulas are for continuous case, all notations (V, P, A, and a) in each formula should have a bar on top of them (take note of Ax+t in second formula, it should have a bar on top of the A)
At 37:37 A_bar_40 should be 0.3235 instead of 0.3233, with this correction, the final answer should be 0.074945 instead of 0.0752.