ngivenPFi: To Find i Given F, n, and P (Engineering Economics)

In iemisc: Irucka Embry's Miscellaneous Functions

To Find i Given F, n, and P (Engineering Economics)

Description

Compute n given P, F, and i

Usage

ngivenPFi(P, F, i)

Arguments

P	numeric vector that contains the present value(s)
F	numeric vector that contains the future value(s)
i	numeric vector that contains the interest rate(s) as a percent

Details

n is expressed as

n = \frac{\log \left(\frac{F}{P}\right)}{\log \left(1 + i\right)}

n

the "number of interest periods"

F

the "future equivalent"

P

the "present equivalent"

i

the "effective interest rate per interest period"

Value

n numeric vector that contains the period value(s)

Author(s)

Irucka Embry

References

William G. Sullivan, Elin M. Wicks, and C. Patrick Koelling, Engineering Economy, Fourteenth Edition, Upper Saddle River, New Jersey: Pearson/Prentice Hall, 2009, page 129, 142.

Examples

# Example for equation 4-7 from the Reference text (page 142)

library(iemisc)

ngivenPFi(P = 500, F = 1000, i = 15)

iemisc documentation built on Sept. 25, 2023, 5:09 p.m.