Investing Money by Regular Instalments (HSC SSCE Mathematics Advanced): Flashcards

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Investing Money by Regular Instalments
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Another name for superannuation

Annuities

Instalment invested longest in regular scheme

First instalment

Tool to find total value of regular instalments

Geometric progressions (GPs)

Approach for formulae in instalment problems

Derive within each question, don't memorise

GP sum formula Sn=S_n =

a(rn1)r1\frac{a(r^n - 1)}{r - 1}

rr in GP sum formula

Common ratio (usually 1+1 + interest rate)

Use of logarithms in investment calculations

Finding how long to reach target value

Rounding rule for nn (investment years)

Round up to next whole number

Monthly interest rate from annual rate

Annual rate ÷ 12

Weekly interest rate from annual rate

Annual rate ÷ 52

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