1 | benefitCostRatio(cf, MARR)
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cf |
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MARR |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 | ##---- Should be DIRECTLY executable !! ----
##-- ==> Define data, use random,
##-- or do help(data=index) for the standard data sets.
## The function is currently defined as
function (cf, MARR)
{
if (class(cf) != "numeric")
return(NULL)
PVBenefits <- 0
PVCosts <- 0
exponent <- 0
for (item in cf) {
if (item > 0) {
PVBenefits <- PVBenefits + pv(item, i = MARR, n = exponent)
}
else {
PVCosts <- PVCosts + pv(abs(item), i = MARR, n = exponent)
}
exponent <- exponent + 1
}
PVBenefits/PVCosts
}
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