Hi Rick. I need to know how I can produce a matrix with the following formula: 1/2+sum of "factorials" of row1-row3. That is to say, I have a matrix with let say 3 columns and 2 rows and I need to produce a new matrix by calculating a value for e.g. element from 1st row and 1st column is equal to (value in the cell=v(row,column)): 1/2+v(1,1)+v(1,1)*v(2,1). And 1st row 2nd column: 1/2+v(1,2)+v(1,2)*v(2,2). And 2nd row 1st column is purely: 1/2+v(2,1). And so on.