For the stand alone solver you may specify a full matrix in which you may later enter values for any or all of the coefficients. Alternatively you may specify a semi-sparse matrix in which you identify coefficients which are nonzero. The values of nonzeros may be entered into the spreadsheet cells later, but zero coefficients cannot be changed and will always be zero.
For the embedded solver, coefficients and constants may be either numerical values or spreadsheet cell names (given as RnCm). Cell names must be given for all of the unknowns.
In summary the 3 options are:
If you are outside the University of Edinburgh, the spreadsheet you create will be emailed to you, so you must give a valid email address. If you would like to try a `full matrix' spreadsheet there is a 12 equation solver available for direct downloading in three spreadsheet formats from the links below. You can save these in your local filespace and load them into any compatible spreadsheet.