1. การใช้ Solver ใน Excel

2. Solver Part of a suite of commands sometimes called what-if analysis tools what-if analysis Find an optimal value for a Formula in one cell — called the Target cell — on a worksheet. works with a group of cells that are related, either directly or indirectly, to the formula in the target cell. Adjusts the values in the Changing cells you specify — called the adjustable cells — to produce the result you specify from the target cell formula. can apply constraints to restrict the values

3. Example for Solver # Telephone survey: A marketing group needs to contact at least 150 wives, 120 husbands, 100 male singles and 110 female singles Cost: $2 /day and $5 /night At most half of all phone calls can be in the evening Formulate LP for min. cost

4. vary Target Constraints Assume # of daytime and night time calls

6. After use “ Solver ”

7. Report Page

8. Add-Ins program Solver Excel 2003: Solver is in Menu Tools To install: Menu bar select Tools  Add-Ins and check box Solver Add-Ins Excel 2007: Solver is in the Analysis group on the Data tab To install: Click the Microsoft Office Button, and click Excel Options. Click Add-Ins, and in the Manage box, select Excel Add-ins. Click Go. In the Add-Ins available box, select the Solver Add-in check box, and then click OK. Tip If Solver Add-in is not listed in the Add-Ins available box, click Browse to locate the add-in. If you get prompted that the Solver Add-in is not currently installed on your computer, click Yes to install it.