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Laws of logarithms. IB SL/HL. Logarithms. Logarithms were invented by John Napier as another form of writing indices. The rules of logarithms. From your answers suggest a simplification for log a - log b. 1. Use your calculator to find:. 3. Use your calculator to find:. - PowerPoint PPT Presentation

### Transcript of Laws of logarithms

• Laws of logarithmsIB SL/HL

• LogarithmsLogarithms were invented by John Napier as another form of writing indices.

• The rules of logarithms1. Use your calculator to find:From your answers suggest a simplification for log a + log b2. Use your calculator to find:From your answers suggest a simplification for log a - log b3. Use your calculator to find:From your answers suggest a simplification for nlog a

• Change of base ruleStart with x=Write as an indexTake a log of both sidesUse the power ruleLeave x on its own.

• The Laws of Logarithms