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Power Variable Rule - Applicable to Finance & Accounting

Sydney Matinga
Mar 10
1 min read

Updated: Aug 22


Compound Interest

Principal = $100,000 AUD


Return on Investment = 15%,


Internal Rate of Return = 115% or 1.15


Time elapsed = 7.5 years


= Principal * ( 1.15 / yr ) ^ ( 7.5 yr )


= 100,000 AUD * ( 1.15 / yr ) ^ ( 7.5 yr )


= 285, 255 AUD



The Rule in Brief

log ( x ^ a * unit ) = unit * log ( x ^ a )


= unit * log ( x ^ a ) ,

log ( x ^ a ) unit




© Sydney Matinga 2026







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