# Log

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The **Log** internal function returns the **natural** logarithm of its argument. This is like the **LN(X)** function in mathematics. Do not confuse the BR **LOG** with the mathematical LOG base 10.

LOG(<positive number>)

The argument must be a positive number.

00010 print LOG(2.718)

produces the following output:

0.999896

However,

00010 print LOG(-3)

produces an error