Lingo

What’sBest!
Version 10.0

®

User’s Manual
Taking your spreadsheet beyond “What If?”

1415 North Dayton Street, Chicago, Illinois 60642 USA Phone: (312) 988-7422 Fax: (312) 988-9065 info@lindo.com www.lindo.com

COPYRIGHT
The What'sBest!® software and its related documentation are copyrighted. You may not copy the What'sBest!® software or related documentation except in themanner authorized in the related documentation or with the written permission of LINDO Systems Inc.

TRADEMARKS
What'sBest!® and LINDO are registered trademarks of LINDO Systems Inc. Other product and company names mentioned herein are the property of their respective owners.

DISCLAIMER
LINDO Systems Inc. warrants that on the date of receipt of your payment, the enclosed computermedia contains an accurate reproduction of the What'sBest!® software and that the copy of the related documentation is accurately reproduced. Due to the inherent complexity of computer programs and computer models, the What'sBest!® program may not be completely free of errors. You are advised to verify your answers before basing decisions on them. NEITHER LINDO SYSTEMS INC. NOR ANYONEELSE ASSOCIATED IN THE CREATION, PRODUCTION, OR DISTRIBUTION OF THE WHAT’SBEST!® SOFTWARE MAKES ANY OTHER EXPRESSED WARRANTIES REGARDING THE DISKS OR DOCUMENTATION AND MAKES NO WARRANTIES AT ALL, EITHER EXPRESSED OR IMPLIED, REGARDING THE WHAT’SBEST!® SOFTWARE, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR OTHERWISE. Further, LINDO Systems Inc.reserves the right to revise this software and related documentation and make changes to the content hereof without obligation to notify any person of such revisions or changes.

ACKNOWLEDGEMENTS
We gratefully acknowledge Professor Sam Savage for his contributions to early releases of What’sBest!®. Copyright © 2010, LINDO Systems, Inc. Published by 1415 North Dayton Street Chicago,Illinois 60642 USA Sales & Information: (312) 988-7422 info@lindo.com Technical Support: (312) 988-9421 tech@lindo.com www.lindo.com

Contents
Contents.................................................................................................................................. III Preface..................................................................................................................................XIII 1 Getting Started With What’sBest! .................................................................................. 1 What is What’sBest! ? ........................................................................................................... 1 Optimization Models.......................................................................................................... 2 Non-Optimization Models................................................................................................... 2 Models with Integer Restrictions ........................................................................................ 2 System Requirements........................................................................................................... 3 Installation Overview ............................................................................................................. 4 The What’sBest! Interactive Environment ............................................................................. 7 Developing a Model inWhat’sBest!....................................................................................... 9 The ABC’s: Three Steps to What’sBest!............................................................................ 9 TUTORIAL ........................................................................................................................... 10 The XYZ Production Problem .......................................................................................... 10 The ABC’s...