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Time Value of Money solver

This is a solver for problems involving the time value of money (TVM). It emulates the TVM solver on the TI-83+ and TI-84 graphing calculators. The seven TVM variables are as follows. N The number of payments I% The interest rate, as a percentage. It should not be divided by 100. PV Present value PMT Periodic payment FV Future value P/Y Payments per year C/Y Times per year that interest is compounded You must press Enter or Tab after entering a value in the input box, or the value will not be updated. Note that inflows of cash are considered positive and outflows are negative. This is a preliminary version, and it may have bugs. In particular, solving for I% may give incorrect values if the inputs are extreme. Tutorial: http://analemma.wikispaces.com/file/view/TimeValueOfMoneyTI-83Plus.pdf