Logarithms (VCE SSCE General Mathematics): Flashcards
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Definition of a logarithm
Definition of a logarithm
The power to which a number must be raised to get another number
Value of
Value of
(because )
If , then equals
If , then equals
Order of magnitude measures
Order of magnitude measures
Scale of quantities expressed as powers of 10
Increase by orders of magnitude means
Increase by orders of magnitude means
Multiply by
Decrease by orders of magnitude means
Decrease by orders of magnitude means
Divide by
Method to find order of magnitude
Method to find order of magnitude
Write in standard form; power of 10 is order of magnitude
Purpose of logarithmic transformation
Purpose of logarithmic transformation
Linearise curved data for easier analysis
When to use transformation
When to use transformation
When data spans several orders of magnitude
Comparing quantities using logs: method
Comparing quantities using logs: method
Subtract logs, then calculate
