Returns the natural logarithm of a number.
| Name | Type | Description |
| arg1 | number | Is the positive real number for which you want the natural logarithm. |
builder.CreateFile("xlsx");
var oWorksheet = Api.GetActiveSheet();
var oFunction = Api.GetWorksheetFunction();
oWorksheet.GetRange("A1").SetValue(oFunction.LN(23));
builder.SaveFile("xlsx", "LN.xlsx");
builder.CloseFile();