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<div itemscope itemtype="https://schema.org/ScholarlyArticle"><meta itemprop="description" content="Definition of Natural Logarithm" /><div class="defTop"><div class="defDefOf">Definition of </div><div class="defWord"><h1><span itemprop="name">Natural Logarithm</span></h1></div><div class="defMore"><a href="../algebra/logarithms.html"> more ...</a></div></div>
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<div class="defText"><span itemprop="articleBody">The logarithm of a number using base <b>e</b> (which is Euler's Number 2.71828...)<br />
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<br />
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It is how many times we need to use <b>e</b> in a multiplication to get our desired number.<br />
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<br />
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<br />
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Examples: <br />
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• the natural logarithm of 7.389 is about <b>2</b>, because 2.71828<sup><b>2</b></sup> ≈ 7.389<br />
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• the natural logarithm of 20.09 is about <b>3</b>, because 2.71828<sup><b>3</b></sup> ≈ 20.09<br />
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<br />
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Often abbreviated as <b>ln</b></span></div>
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