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Financial Algebra: Annuities and Debt Repayments
Two presentations with the theory and derivation of the formulas for annuities and debt repayments. A number of exercises are worked out each time, both with the TI84 graphing calculator and with Geogebra.
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Financial Algebra: Presentation of equivalent interest rates
Derivation of the formulas for equivalent interest rates for both simple and compound interest. This is illustrated with a short example.
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Financial Algebra: Presentation of interest calculation
In this presentation, percentage calculation and percentage increase are first repeated. Afterwards, some financial concepts and their associated symbols are defined and the distinction between simple and compound interest follows.
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