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Introduction

Expand log ...

Question

Expand $log 15$ .

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Solution

$log 15 = log (5 \times 3)$
$\Rightarrow log 15 = log 5 + log 3$

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Similar questions

Q. Without using logarithm tables, evaluate:

{log}_{15} 225^{225}

4 log 4 + 2 log 5 - log 15

as a single logarithm.

Q. Prove that :

log \frac{9}{14} + log \frac{35}{24} - log \frac{15}{16} = 0

l o g_{9}

40

l o g 15

l o g_{20}

\frac{log 225}{log 15} = log x

, then the value

x

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