Logarithms

Logs, short for logarithms, provide a way to refer to the powers in an expression. When you come across logs, you will see the word ‘log’ followed by a small number that we call a subscript – this subscript is known as the ‘base’. This is followed by a number on brackets although sometimes the brackets are left out.

$\log_a(b)=c$

Replace ‘log’ with ‘the power of’ and this reads as ‘the power of a to get a result of b is c’. So it evident that this can be used interchangeably with the equation

$a^c=b$

Example – $\log_2(8)=3$ can be changed to $2^3=x$ and so x is 8.

See more on logs: