Pre-Cal 40S April 21, 2009

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Darren Kuropatwa

More on the change of base law and solving logarithmic equations.

Educación Tecnología Economía y finanzas

A logarithmic spiral ...

Spiral by ﬂickr user Roger Smith

Solve each of the following using logarithms ...

When no base is indicated, the
The Common Logarithm
base of the logarithm is base 10.

a =b
x
a =b
x

The Change of
Base Law

Now solve these using logarithms ...

Now solve these using logarithms ...

Now solve these using logarithms ...

Use the change of base formula to ﬁnd the decimal approximation of
each of the following to 4 decimal places ...

Now lets solve some logarithmic equations ...

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Pre-Cal 40S April 21, 2009

1. A logarithmic spiral ... Spiral by ﬂickr user Roger Smith

2. Solve each of the following using logarithms ... When no base is indicated, the The Common Logarithm base of the logarithm is base 10.

3. a =b x a =b x The Change of Base Law

4.

5. Now solve these using logarithms ...

6. Now solve these using logarithms ...

7. Now solve these using logarithms ...

8. Use the change of base formula to ﬁnd the decimal approximation of each of the following to 4 decimal places ...

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