×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Finding Max value?

Finding Max value?

Finding Max value?

(OP)
Does anyone know how to find the value in one cell that will result in an equation in another cell producing its max value?  

SIMPLIFIED EXAMPLE:

      A        B    
1    ?     -(X-3)^2
2

      A        B    
1    3       0.0
2

Again this is a simplified example.  My actual spreadsheet is pretty complex so dragging A1, & B1 down as A1 increases really isn't an option.  And I've had enough of the trial & error technique.

RE: Finding Max value?

This is not possible in general. The non existent function FINDROOTSOFANDEVALUATE() would have to be able to perform differentiation and then decide which of the stationary points is the maximum. Also, how would it report if there were two equal maxima?

Solver may have a decent stab at it, depending on the complexity of your response space. In this case your target would be to maximise B1 by varying A1.

Otherwise, read many of the threads below on optimisation.



Cheers

Greg Locock

RE: Finding Max value?

Use the solver function..... Tools->Solver...

RE: Finding Max value?

(OP)
Solver is God's gift to Excel!!!! Thank's for showing me the most useful tool in the history of anything.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources