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My BASIC Notes

LOG
Abbreviation:

TYPE: Floating-Point Function
FORMAT: LOG(<numeric>)

Action: Returns the natural logarithm (log to the base of e) of the argument. If the value of the argument is zero or negative the BASIC error message ?ILLEGAL QUANTITY will occur.

EXAMPLES of LOG Function:

25 PRINT LOG(45/7)
1.86075234

10 NUM=LOG(ARG)/LOG(10) (Calculates the LOG of ARG to the base 10)