One of the topics that students need to familiarize in math is logarithms. Many students would initially think that logarithms are difficult to understand. This is because the initial equations that they see are composed of letters, numbers, bases and exponents.

**LOG FORMULA:**

log_{10}x is a number **n** such that 10^{n} = x

Today, people may use a log calculator that can simplify this process and save time in determining the logarithm of a number to a certain base. Unfortunately in school, these calculators may only be used at a later part of the lesson since students should know how to calculate logarithms by themselves in the earlier stages. This is done to let the students familiarize the process and for them to know how the calculator came up with that answer. In addition to that, a logarithm chart may also be used for easy memorization. In fact, scientists in the past memorized the log chart so that they can simply give out the logarithm of a certain number without the help of manual counting or a calculator.

In the seventeenth century, John Napier was the person who made logarithms known to everyone. This was the time when the most basic mathematical operations were confined to addition, subtraction, multiplication and of course, division. Addition and subtraction were known as the easiest operations while multiplication and division where the operations that people found difficult.

### The introduction of logarithms was propelled in order for these mathematical operations to be converted into a simpler form. During that time, there was no log calculator that can perform different complicated logarithmic functions yet so the people relied on log charts instead. But even so, many professions have found the use of logarithms very useful and it was instantly adapted by mathematicians, engineers and scientists too. Aside from logarithm charts and tables, slide rules were also utilized.

## To calculate log to a base other than 10 use this calculator:

The use of logarithms has evolved over the years. In the eighteenth century, logarithms were already associated with exponents. So instead of just simplifying multiplication and division, logarithms were also used in place of exponential numbers. Today, the use of logarithmic functions is still widely used. However, the actual use of logarithms and its calculations have diminished when computers and calculators were invented. Today, different disciplines aside from mathematicians use logarithms in their regular work. Some of these people may still use a logarithm chart but many people use sophisticated computers for automatic computation and even a log calculator. These people may be astronomers, physicists and even engineers. Regular people may not realize that logarithms are important but the jobs of these people may never be complete without logarithmic functions.

When students encounter a log calculator, they are introduced to a scientific calculator for more complicated mathematical equations. You will be able to see the ‘log’ button amidst all the extra buttons on top of the numbers. This is the function used to calculate logarithms. But aside from that the ‘ln’ button is also important because it signifies natural logarithms. The ‘log’ button is mainly used to generate the common logarithm which is in the base 10. If a different base is used, the ‘log’ button can still be used but the new base number must be entered right after the ‘log’ word enclosed in a parenthesis. The ‘ln’ button us basically used for logarithms that have base e. Students may already graph the logarithm through the answer generated by the calculator. As the students learn the lesson, they will realize that logarithms actually simplify large number equations by making the numbers appear smaller.