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<p>plot.</p>

<p><big> Extensions </big></p>
<p>A modified log transform can be defined for negative input (y < 0) to avoid the singularity for zero input (y</i> = 0), and so produce symmetric log plots:<br/>
:for a constant C=1/ln(10).</></p>

<p><big> Logarithmic units </big></p>
<p>A <b>logarithmic unit</b> is a <a href="page.php?w=Units_of_measurement">unit</a> that can be used to express a quantity (<a href="page.php?w=Physical_quantity">physical</a> or mathematical) on a logarithmic scale, that is, as being proportional to the value of a <a href="page.php?w=logarithm">logarithm</a></p><p>
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