Matrix math functions like the following are available in Excel: MMULT function MDETERM function TRANSPOSE function MINVERSE function With such functions, one can perform calculations from EasyLanguage (linked to Excel via XLInputs.dll) as follows: Pass values to Excel with XLO.Num functions Trigger a calculation with XLO.CalcSheet, XLO.CalcRngA1 or XLO.CalcRngRC Retrieve results with XLI.NumRep functions XLInputs is sold here: […]