SMG FE 101 Lecture Notes - Lecture 5: Interest, Cash Flow, Net Present Value

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16 Mar 2016
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Interest rates are the price of using money. Effective annual rate (ear) aka annual percentage yield (apy) The total amount of interest that will be earned at the end of one year. Adjusting the discount rate to different time periods. In general, by raising the interest rate factor (1 + r) to the appropriate power, we can compute an equivalent interest rate for a longer (or shorter) time period. (1 + r)0. 5 = (1. 05)0. 5 = . 0247, so a yearly rate of 5%, is equivalent to a rate of 2. 47% every half of a year. Indicates the amount of interest earned in one year without the effect of compounding. Because the apr does not reflect the true amount you will earn over one year, the. Apr itself cannot be used as a discount rate. Instead, the apr is a way of quoting the actual interest earned each compounding period:

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