Logarithms
The logarithm of a number with a given base is the exponent to which it is necessary to raise the base in order to obtain the number.
a is the base, x is the number and y is the logarithm.
Calculate the Logarithm:
Common Logarithm
The common logarithm has a base of 10. It is represented by log (x).
| x | 0.001 | 0.01 | 0.1 | 1 | 10 | 100 | 100 |
|---|---|---|---|---|---|---|---|
| y = log x | −3 | −2 | −1 | 0 | 1 | 2 | 3 |
Natural Logarithm
The natural logarithm has a base of e (an irrational number with an approximate value of 2.718281828). It is represented by ln (x).
