/text/scalc/01/solver.xhp

goal seeking;solver what if operations;solver back-solving solver Solver Opens the Solver dialog. A solver allows to solve equations with multiple unknown variables by goal seeking methods.

target cell Enter or click the cell reference of the target cell. This field takes the address of the cell whose value is to be optimized.maximum Try to solve the equation for a maximum value of the target cell.where is the equation?minimum Try to solve the equation for a minimum value of the target cell.value of Try to solve the equation to approach a given value of the target cell.value of text field Enter the value or a cell reference.by changing cells Enter the cell range that can be changed.cell reference Enter a cell reference.operators Select an operator from the list.what do these operators do? what is the meaning of Integer and Binary here? I hate such spec docs that leave so many questionsvalue Enter a value or a cell reference.shrinker Click to shrink or restore the dialog. You can click or select cells in the sheet. You can enter a cell reference manually in the input box.delete row Click to remove the row from the list. Any rows from below this row move up.options button Opens the Options dialog.solve button Click to solve the equation with the current settings. The dialog settings are retained until you close the current document. To solve equations with the solver The goal of the solver process is to find those variable values of an equation that result in an optimized value in the target cell, also named the "objective". You can choose whether the value in the target cell should be a maximum, a minimum, or approaching a given value. The initial variable values are inserted in a rectangular cell range that you enter in the By changing cells box. You can define a series of limiting conditions that set constraints for some cells. For example, you can set the constraint that one of the variables or cells must not be bigger than another variable, or not bigger than a given value. You can also define the constraint that one or more variables must be integers (values without decimals), or binary values (where only 0 and 1 are allowed). The default solver engine supports only linear equations.Add an example. A good one is at http://www.solver.com/stepbystep.htm but that is not OpenSource