Although Excel’s Data Table and Goal Seek commands work just fine for simple problems that require determining the direct relationship between the inputs and results in a formula, you need to use the Solver add-in when dealing with more complex problems. For example, use the Solver to find the best solution when you need to change multiple input values in your Excel model and you need to impose constraints on these values and/or the output value.
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The Solver add-in works by applying iterative methods to find the “best” solution given the inputs, desired solution, and the constraints that you impose. With each iteration, the program applies a trial-and-error method (based on the use of linear or nonlinear equations and inequalities) that attempts to get closer to the optimum solution.
Solver add-in in Excel not working in mac Solver won't allow me to select the Simple LX function. You can follow the question or vote as helpful, but you cannot reply to this thread. I have the same question (0) Subscribe. Add-on 'Solver' Not giving the option of 'Simplex LP' for Microsoft Excel 2016 for Mac. Solver is an analysis tool in excel which can be enabled by the addins section of excel, solver tool is used to find out the best solution for problems which can linear or non linear, there are three methods to solve the data in the solver, solver is used to either maximize or minimize any output based on certain impacting variables.
When using the Solver add-in, keep in mind that many problems, especially the more complicated ones, have many solutions. Although the Solver returns the optimum solution, given the starting values, the variables that can change, and the constraints that you define, this solution is often not the only one possible and, in fact, may not be the best solution for you. To be sure that you are finding the best solution, you may want to run the Solver more than once, adjusting the initial values each time you solve the problem.
When setting up the problem for the Solver add-in in your Excel worksheet, define the following items:
After you finish defining the problem with these parameters and have the Solver add-in solve the problem, the program returns the optimum solution by modifying the values in your worksheet. At this point, you can choose to retain the changes in the worksheet or restore the original values to the worksheet. You can also save the solution as a scenario to view later before you restore the original values.
You can use the Solver add-in with the Scenario Manager to help set up a problem to solve or to save a solution so that you can view it at a later date. The changing cells that you define for the Scenario Manager are automatically picked up and used by the Solver when you select this command, and vice versa. Also, you can save the Solver’s solution to a problem as a scenario (by clicking the Save Scenario button in the Solver dialog box) that you can then view with the Scenario Manager.
Setting up and defining the problem in Excel 2019
The first step in setting up a problem for the Solver to work on is to create the worksheet model for which you will define the objective cell, variables cells, and the constraint cells.
Keep in mind that the Solver is an add-in utility. This means that, before you can use it, you need to make sure that the Solver add-in program is still loaded, as indicated by the appearance of the Solver button in the Analysis group at the end of the Data tab on the Ribbon. If this button is missing, you can load Solver by opening the Add-Ins tab of the Excel Options dialog box (Alt+FTAA) and then clicking the Go button after making sure that Excel Add-Ins is displayed in the Manage drop-down list box to its immediate left. Then, select the Solver Add-in check box in the Add-Ins dialog box to put a check mark in it before you click OK to close the dialog box and reload the add-in.
To define and solve a problem with the Solver add-in after you’ve loaded the add-in and have created your worksheet model, you follow these steps:
Solving the problem with Excel’s Solver
When you click the Solve button, the Solver Parameters dialog box disappears, and the status bar indicates that the Solver is setting up the problem and then keeps you informed of the progress in solving the problem by showing the number of the intermediate (or trial) solutions as they are tried. To interrupt the solution process at any time before Excel calculates the last iteration, press the Esc key. Excel then displays the Show Trial Solution dialog box, informing you that the solution process has been paused. To continue the solution process, click the Continue button. To abort the solution process, click the Stop button.
When Excel finishes the solution process, the Solver Results dialog box appears. This dialog box informs you whether the Solver was able to find a solution, given the target cell, changing cells, and constraints defined for the problem. To retain the changes that the Solver makes in your worksheet model, leave the Keep Solver Solution option button selected and click OK to close the Solver Results dialog box. To return the original values to the worksheet, click the Restore Original Values option button instead. To save the changes as a scenario before you restore the original values, click the Save Scenario button and assign a name to the current scenario before you click the Restore Original Values option and OK button.
Unlike when using the Goal Seek command, after clicking the Keep Solver Solution option button in the Solver Results dialog box, you can’t use the Undo command button on the Quick Access toolbar to restore the original values to your worksheet. If you want to be able to switch between the “before” and “after” views of your worksheet, you must save the changes with the Save Scenario button and then select the Restore Original Values option button. That way, you can retain the “before” view in the original worksheet and use the Scenario Manager to display the “after” view created by the Solver.
![]() Changing Excel’s Solver options
For most of the problems, the default options used by the Solver are adequate. In some situations, however, you may want to change some of the Solver options before you begin the solution process. To change the solution options, click the Options button in the Solver Parameters dialog box. Excel then opens the Options dialog box with the All Methods tab selected where you can make all necessary changes.
After changing the options, click OK to return to the Solver Parameters dialog box; from here, you can then click the Solve button to begin the solution process with the new solution settings that you just changed.
When you use the default GRG (Generalized Reduced Gradient) Nonlinear or Evolutionary method, you can set additional Solver settings using the options on the GRG Nonlinear and Evolutionary tabs of the Options dialog box. These options include changing the Converge, Population Size, and Random Seed settings for either of these particular methods.
Saving and loading a model problem in Excel 2019
The objective cell, variable cells, constraint cells, and Solver options that you most recently used are saved as part of the Excel worksheet when you click the Save button on the Quick Access toolbar (Ctrl+S). When you define other problems for the same worksheet that you want to save, you must click the Save Model button in the Solver Options dialog box and indicate the cell reference or name of the range in the active worksheet where you want the problem’s parameters to be inserted.
When you click the Load/Save button, Excel opens the Load/Save Model dialog box, containing a Select Model Area text box. This text box contains the cell references for a range large enough to hold all the problem’s parameters, starting with the active cell. To save the problem’s parameters in this range, click OK. If this range includes cells with existing data, you need to modify the cell reference in this text box before you click OK to prevent Excel from replacing the existing data.
After you click OK, Excel copies the problem’s parameters in the specified range. These values are then saved as part of the worksheet the next time you save the workbook. To reuse these problem parameters when solving a problem, you simply need to open the Solver Options dialog box, click the Load/Save button to open the Load/Save Model dialog box, click the Load button, and then select the range containing the saved problem parameters. When you click OK in the Load Model dialog box, Excel loads the parameters from this cell range into the appropriate text boxes in the Solver Parameters dialog box. You can then close the Solver Options dialog box by clicking OK, and you can solve the problem by using these parameters by clicking the Solve command button.
Remember that you can use the Reset All button whenever you want to clear all the parameters defined for the previous problem and return the Solver options to their defaults.
Creating Solver reports in Excel 2019
You can create three different types of reports with the Solver:
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Excel places each report that you generate for a Solver problem in a separate worksheet in the workbook. To generate one (or all) of these reports, select the report type (Answer, Sensitivity, or Limits) from the Reports list box of the Solver Results dialog box. To select more than one report, just click the name of the report.
When you click OK to close the Solver Results dialog box (after choosing between the Keep Solver Solution and Restore Original Values options), Excel generates the report (or reports) that you selected in a new worksheet that it adds to the beginning of the workbook. (Report sheet tabs are named by report type, as in Answer Report 1, Sensitivity Report 1, and Limits Report 1.)
Hi Everyone,We will report this issue to the related team. Summarizing the symptom here:DescriptionIn Excel 2016 for Mac, you are not able to open the drop down list of Selecting a Solving Method in Solver add-in.EnvironmentMac OS 10.12.6, Excel 2016 for Mac, version 15.38WorkaroundInstall Excel 2016 for Mac previous version like 15.37 ( or use Excel Online.More informationWe have the reproduce steps and will send to the related team for investigation. We will post updates in the following thread once we receive more information.
You can subscribe to the following thread to receive the latest updates.This thread will be closed for further posting. You can monitor the progress of the issue in the primary thread.Thanks for your understanding.Joanne.
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