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  1. Compound interest And Fractals | Math Forums

    Jan 25, 2024 · How on earth does the compound interest formula have anything to do with this? For the reason that compound interest's recursive; For any given p , we have the outputs (amount) f (f (f (p))) …

  2. Reverse compound interest excel formula? | Math Forums

    Feb 5, 2015 · Hi, is there a way to find out the annual compound interest (A), from the interest (I) over (Y) number of years? For example: If interest over 5 years is 300%, so I=5, Y=3.0, how can I …

  3. Compound interest and annuity - Math Forums

    Aug 19, 2012 · Amortization formula: A = P i (1 + i) n (1 + i) n 1 . . where: {A = periodic payment P = amount of loan i = periodic interest rate n = number of periods} W\!e are ...

  4. help me find out what formulas to use for these | Math Forums

    Apr 3, 2013 · After 25 years the investment tripled. Use this information to find the interest rate that was given. Compound interest formula? Any problem with the words "sinking fund" means you use the …

  5. (1 = i) & (1 + i) ^n | Math Forums

    Jan 9, 2024 · On compound interest tables, I have seen just (1+i) without the P used. In addition to being goofy, the second factorization is flat out wrong. (P + P) n ≠ P (1 + i) n . Perhaps working …

  6. How to find compound interest | Math Forums

    Dec 5, 2018 · Hello How to find compound interest if there is compound amount is Rs 5774 and time is 6 months principle amount is Rs5662 and interest is Rs112 how to find interest ? CI=P[(1+r)^n-1]

  7. Understanding negative exponents in regards to a PV formula

    Jan 29, 2022 · To get future value, we multiply periodic payments by the interest rate (compounded effective int rate? I forgot the term, but you get the periodic interest rate, compound it for nt periods …

  8. Calculate his balance after 12 years. | Math Forums

    Feb 5, 2015 · Are you told that this is "simple interest"? That is what you calculated but that would be very strange for bank interest. "Compound interest" would be would be 130 (1.06)^ {12}.

  9. Explain this shortcut C.I solution. | Math Forums

    Jul 19, 2019 · A sum of money placed at Compound interest becomes 27 times of itself in 15 years. In 25 years, it will becomes how many times? Shortcut Sol: 3^3 = 3*5...

  10. How to know the correct interest rate to apply? | Math Forums

    Apr 1, 2025 · The answer key indicates that the interest rate "r" was used to compute the future value of 450, where "r" is given by (1+r/m)^m =1.07, in which "m" is the number of compounding periods. …