This example loads the previously created Solver model stored on Sheet1, changes one of the constraints, and then solves the model again. If CellRef and Relation do not match an existing constraint, you must use the SolverDelete and SolverAdd functions to change the constraint. If you choose 4, 5 or 6, CellRef must refer to decision variable cells, and FormulaText should not be specified.Ĭells referenced by CellRef must have final values that are integers.Ĭells referenced by CellRef must have final values of either 0 (zero) or 1.Ĭells referenced by CellRef must have final values that are all different and integers.įormulaText Optional Variant. To check that this function is linear, Solver approximates the derivatives of the function numerically at various points. This is exactly what we mean by a linear function: a sum of products of constants and decision variables. The arithmetic relationship between the left and right sides of the constraint. Let’s say your function, written algebraically, is f(x,y) 4x 6y, where x and y are decision variables. A reference to a cell or a range of cells that forms the left side of a constraint. SolverChange( CellRef, Relation, FormulaText)ĬellRef Required Variant. If Solver.xlam does not appear under Available References, click Browse and open Solver.xlam in the \office14\library\Solver subfolder. In the Visual Basic Editor, with a module active, click References on the Tools menu, and then select the Solver.xlam check box under Available References. Equivalent to clicking Solver in the Data | Analysis group and then clicking Change in the Solver Parameters dialog box.īefore you use this function, you must establish a reference to the Solver add-in.
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