Returns the effective annual interest rate.
| Name | Type | Description |
| arg1 | any | Is the nominal interest rate. |
| arg2 | any | Is the number of compounding periods per year. |
builder.CreateFile("xlsx");
var oWorksheet = Api.GetActiveSheet();
var oFunction = Api.GetWorksheetFunction();
oWorksheet.GetRange("A1").SetValue(oFunction.EFFECT(0.57, 4));
builder.SaveFile("xlsx", "EFFECT.xlsx");
builder.CloseFile();