×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Are you an
Engineering professional?
Join Eng-Tips Forums!
• Talk With Other Members
• Be Notified Of Responses
• Keyword Search
Favorite Forums
• Automated Signatures
• Best Of All, It's Free!

*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.

# Unconstrained Maximisation Problem

## Unconstrained Maximisation Problem

(OP)
Hi everyone, essentially my aim is to maximise the unconstrained equation (1) with respect to lambda_i's for i = 0, 1, ..., 10. These lambda_i's can take on any REAL value, including 0. All other variables and functions are defined as follows:

I wish to solve for these lambda_i's in matlab, I have quite a limited knowledge with matlab, however I realise I have to use these three functions:

http://www.mathworks.com/help/stats/multivariate-n...
http://www.mathworks.com/help/matlab/optimization....
http://www.mathworks.com/help/optim/functionlist.h...

However due to my limited experience with matlab I am not sure about how to write the code, could anyone please give me a hand?

Any help will be much appreciated!

### RE: Unconstrained Maximisation Problem

(OP)
Hi, sorry what is this file exchange section? I am new to the forums, apologies if this was posted in the wrong place.

### RE: Unconstrained Maximisation Problem

(OP)
Oh I see, I've searched the mathsworks site, there doesn't appear to be anything similar.

### RE: Unconstrained Maximisation Problem

Check if your version of Matlab has the "optimization toolbox"
If it does, it is relatively easy to set up your problem.

Fe (IronX32)

### RE: Unconstrained Maximisation Problem

(OP)
Yup I do have the optimization toolbox, in fact, I think I've got the code, however the problem is that I've been running it since last night and it still hasn't finished, how do I know when a script has finished running? And how can I make it run faster? The code + data file is attached below:

http://files.engineering.com/getfile.aspx?folder=b...

http://files.engineering.com/getfile.aspx?folder=3...

http://files.engineering.com/getfile.aspx?folder=a...

http://files.engineering.com/getfile.aspx?folder=c...

The first 3 files are my codes, last file is the data file.

#### 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.

Close Box

# Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

• Talk To Other Members
• Notification Of Responses To Questions
• Favorite Forums One Click Access
• Keyword Search Of All Posts, And More...

Register now while it's still free!