Daniel Skoog

Daniel Skoog

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8 years, 293 days
Maplesoft
Maple Product Manager

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Daniel Skoog is a Product Manager for Maplesoft. He holds a B.Sc. in Mathematics from Queen’s University, Canada and a M.Sc. in Financial Mathematics from Uppsala University, Sweden. Daniel joined Maplesoft in 2011 and has used his applied technical expertise of mathematics, statistics, data analysis and software design to deliver several exciting new releases. Daniel has also contributed several commands to the Maple library, having authored new routines in Statistics, Finance and data analysis.

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These are replies submitted by Daniel Skoog

As the previous comments suggest, there is a known bug within the minimize command for the given function.  However, the result from the Optimization[Minimize] command is expected.

 

From the Optimization, Minimize help page: The Minimize command computes a LOCAL minimum of an objective function.  In this case, Minimize finds a local minimum at: [-2.02634418581704, [x = .452809600260151]] and stops searching there. 

 

If you tell Optimization[Minimize] to look at another specific interval, it will find the first local minimum and return that value (this was shown in my second example above).

 

The difference here is that the minimize command symbolically searches for a GLOBAL minmum, whereas the Optimization[Minimize] command returns the first LOCAL minimum it encounters within a certain range.

As the previous comments suggest, there is a known bug within the minimize command for the given function.  However, the result from the Optimization[Minimize] command is expected.

 

From the Optimization, Minimize help page: The Minimize command computes a LOCAL minimum of an objective function.  In this case, Minimize finds a local minimum at: [-2.02634418581704, [x = .452809600260151]] and stops searching there. 

 

If you tell Optimization[Minimize] to look at another specific interval, it will find the first local minimum and return that value (this was shown in my second example above).

 

The difference here is that the minimize command symbolically searches for a GLOBAL minmum, whereas the Optimization[Minimize] command returns the first LOCAL minimum it encounters within a certain range.

Hello,


I can see that Spybot is running on your system. This program has been known to block Maple's kernel from running. Could you try to uninstall Spybot, then restart your computer and run Maple.

Hello,


I can see that Spybot is running on your system. This program has been known to block Maple's kernel from running. Could you try to uninstall Spybot, then restart your computer and run Maple.

What version of OsX do you have?  If you are not sure, click on the Apple at the top left corner and go to About this Mac.

@Jorgenecochea: I just tried the same method here and it worked fine.

I recommend that you try to do the following:

Drag the Maple ## folder to the trash.

Drag the ./maple/## folder to the trash.

Drag any icons to the trash.

Make sure that you empty the trash.

 

When you are reinstalling Maple, first make the bin file executable by running something like:

chmod a+x./Maple##Installer.bin

 

Hope this helps.

@Jorgenecochea: I just tried the same method here and it worked fine.

I recommend that you try to do the following:

Drag the Maple ## folder to the trash.

Drag the ./maple/## folder to the trash.

Drag any icons to the trash.

Make sure that you empty the trash.

 

When you are reinstalling Maple, first make the bin file executable by running something like:

chmod a+x./Maple##Installer.bin

 

Hope this helps.

Thanks that was the document we were looking for.

Cheers.

Thanks that was the document we were looking for.

Cheers.

Shift+Tab works in Maple 15 in Ubuntu 10.10.

@itsme:What distribution are you using?

Shift+Tab works in Maple 15 in Ubuntu 10.10.

@itsme:What distribution are you using?

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