| LET | Index Level | LOCATE |
| Syntax | LN( num.expression ) |
| Category | BASIC |
| Type | Function |
| Description |
returns the natural logarithm (base e, which is 2.718281828 rounded to "precision") of a given numeric expression.
This function is the inverse of the "exp" function. If the expression is less than or equal to zero, "ln" returns a zero and prints a runtime error message. |
| Options | |
| See Also | PRECISION num.expression TAN statements & functions functions EXP |
| Example | |
| Warnings | |
| Compatibility | D3 7.0 AP R83 |
| LET | Index Level | LOCATE |