You use a scientific calculator, or a logarithm table. The actual calculations are rather involved, and include adding up an infinite converging series. Eventually the terms of the series become small enough so that you can ignore them, but it is still too involved to do it on a regular basis.
You use a scientific calculator, or a logarithm table. The actual calculations are rather involved, and include adding up an infinite converging series. Eventually the terms of the series become small enough so that you can ignore them, but it is still too involved to do it on a regular basis.
You use a scientific calculator, or a logarithm table. The actual calculations are rather involved, and include adding up an infinite converging series. Eventually the terms of the series become small enough so that you can ignore them, but it is still too involved to do it on a regular basis.
You use a scientific calculator, or a logarithm table. The actual calculations are rather involved, and include adding up an infinite converging series. Eventually the terms of the series become small enough so that you can ignore them, but it is still too involved to do it on a regular basis.
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You use a scientific calculator, or a logarithm table. The actual calculations are rather involved, and include adding up an infinite converging series. Eventually the terms of the series become small enough so that you can ignore them, but it is still too involved to do it on a regular basis.
In order to find the log with a power of ten, use the LOG button. For example, to find log105, type log(5). (The parenthesis after the g will appear when you press the LOG button. In order to find a log with a power other than ten, you will have to divide by the log10 of that power. For example, to find log82, type log(8)/log(2). In order to find the natural log of a number, use the LN key. For example, to find the natural log of 91, type ln(91).
Logs are defined only for positive numbers so the log of a negative number does not exist.
If you are using a scientific calculator you will have a key labelled "log". To find the logarithm (to base 10) of a number, simply enter "log" followed by the number that you want to log. If you want a natural logarithm - log to the base e - use the "ln" key instead. If you haven't got a scientific calculator, use the one on your computer.
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The inverse of the logarithm of a number is ten to the number, meaning that the number is the exponent. In this case, 10^-3.1 equals approximately .0007943.