Problem 56135. Ordinary Annuity : Rate (Future Value)
Theorem : Future Value of an Ordinary Annuity
where;
- F : Future value
- A : Periodic payment
- r : Rate per period
- n : Number of periods (payments)
Calculate r, given, F, A and n. Assume interest rate is a positive real number.
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William
on 1 Oct 2022
The "correct" values of r used in these tests all appear to have errors greater than the tolerance of 1e-4, as you can verify by plugging them in to the formula for Future Value.
Mehmet OZC
on 1 Oct 2022
Thanks for the catch. I have updated the test suite.
William
on 1 Oct 2022
Thanks Mehmet, but there are still big errors. The correct answers are:
Test 1: r = 0.08837372469
Test 2: r = 0.06774487509
Test 3: r = 0.01422142597
Mehmet OZC
on 1 Oct 2022
I fixed the errors. I also updated the assert statements.
Rafael S.T. Vieira
on 3 Nov 2022
Good problem.
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