What are logarithms?
Let's glance at an example:
Consider the expression
y=ax
where a is a constant.
We would like to express y as a
function
of x and x as a function of y.
Writing y as a function of x :
y=ax
Writing x as a function of y :
-
In this case we need
to use the concept of logarithms.
If y = ax, then we say that x is the
logarithm of y to the base a and we write it as
x = logay