Logarithms using a calculator

Using a calculator A scientific calculator has two "log" buttons on it. These are marked log and ln.The log key is used for calculations of the form . For example, to work out that you would press log10000 =Using this method you should be able to find that The ln key is used for calculations of the form . This is called the natural logarithm. In mathematics the natural logarithm is usually written as ln x.Like , e is a mathematical constant and has many applications in mathematics, particularly with logs. For example, to find , press on your calculator.Using this method you should find that

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