Common Logarithm<br />Log with base 10 is called common logarithm, and its other <br />names are decadic logarithmic because of its base <br />10.log10 log . <br />Its use can be observed in numerical calculations.<br />Natural Logarithm<br />The log with base “e” is termed as “Natural Logarithm”.<br />(John Napier-First released in 1614)<br />It can be represent as log .<br />It is used in theoretical research in science and engineering. The <br />value is 2.7182818…, an irrational number<br />Laws of Logarithms<br />At 9 standard, we discuss the following laws and their proves, <br />and questions as well.<br />1. Product Law<br />
