Measure-Interest.ps1
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function Measure-Interest { <# .Synopsis Measures compound interest .Description Measures compound interest, using the formula: ### P = C(1 + r/n)^nt Where: * P is the future value * C is the initial deposit, * r is the rate expressed as a fraction * n is the number of times per year interest is compounded * t is the number of years invested .Example #> param( # The initial deposit [Parameter(Mandatory=$true)] [Double]$InitialDeposit, # The rate, expressed as a percentage [Parameter(Mandatory=$true)] [ValidateRange(1,100)] [Double]$Rate, # The number of times interest is compounded per year #|Default 1 [ValidateRange(1,365)] [Double]$TimesCompoundedPerYear = 1, # The number of years you keep the investment #|Default 1 [ValidateRange(1,365)] [Double]$YearsInvested= 1 ) process { $InitialDeposit * ([MAth]::Pow(( 1+ ($Rate / 100 / $TimesCompoundedPerYear)),($TimesCompoundedPerYear * $YearsInvested))) } } |