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Laws of logarithms

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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

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Laws of logarithms IB SL/HL

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Page 1: Laws of logarithms

Laws of logarithmsIB SL/HL

Page 2: Laws of logarithms

Logarithms

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

Page 3: Laws of logarithms

The rules of logarithms

1. Use your calculator to find:

From your answers suggest a simplification for log a + log b

2. Use your calculator to find:

From your answers suggest a simplification for log a - log b

3. Use your calculator to find:

From your answers suggest a simplification for nlog a

Page 4: Laws of logarithms

Change of base rule

Start with x=

Write as an index

Take a log of both sides

Use the power rule

Leave x on it’s own.

Page 5: Laws of logarithms

The Laws of Logarithms

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