Discount Rate
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04-09-2022, 12:50 PM
(This post was last modified: 04-09-2022 01:24 PM by Albert Chan.)
Post: #4
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RE: Discount Rate
(10-16-2020 04:02 PM)Albert Chan Wrote: XCas> C := I*N / (1 - (1+I)^-N) // C = |N*PMT/PV|, "compounding factor" This may be a better rate estimate, by dropping compounding factor O(I^2) With previous defined P, solve for I, we have: \(\displaystyle I ≈ \frac{2\;(N-P)}{P\;(N+1)}\) For previous 2 examples, formula give slightly better guess rate. Newton steps (denoted by →) converge faster. I(N= 36, P= 3000/100) ≈ 0.010811 → 0.010203 → 0.010207 I(N=-36, P=-5000/100) ≈ 0.016000 → 0.018003 → 0.017958 |
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Messages In This Thread |
Discount Rate - SlideRule - 04-04-2022, 01:54 PM
RE: Discount Rate - Thomas Klemm - 04-08-2022, 07:44 PM
RE: Discount Rate - Albert Chan - 04-08-2022, 10:21 PM
RE: Discount Rate - Albert Chan - 04-09-2022 12:50 PM
RE: Discount Rate - Eddie W. Shore - 04-10-2022, 11:29 PM
RE: Discount Rate - Albert Chan - 04-09-2022, 05:47 PM
RE: Discount Rate - Albert Chan - 04-10-2022, 04:03 AM
RE: Discount Rate - Thomas Klemm - 04-10-2022, 12:19 PM
RE: Discount Rate - Albert Chan - 04-11-2022, 01:18 AM
RE: Discount Rate - Albert Chan - 04-11-2022, 03:11 PM
RE: Discount Rate - Albert Chan - 04-11-2022, 03:57 PM
RE: Discount Rate - Albert Chan - 05-11-2022, 06:22 PM
RE: Discount Rate - Thomas Klemm - 04-11-2022, 02:37 AM
RE: Discount Rate - Thomas Klemm - 04-11-2022, 08:48 PM
RE: Discount Rate - Thomas Klemm - 04-12-2022, 11:11 PM
RE: Discount Rate - Thomas Klemm - 04-12-2022, 11:13 PM
RE: Discount Rate - Thomas Klemm - 04-18-2022, 01:58 PM
RE: Discount Rate - rprosperi - 04-18-2022, 06:41 PM
RE: Discount Rate - Thomas Klemm - 04-18-2022, 07:03 PM
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