Commands do not work from Modern matrix Algebra textbook

I'm using "Modern Matrix Algebra" textbook and I cannot seem to get any of the commands to work. For instance it says to type "mapit" on the command line and I'm supposed to get a routine. Matlab responds "no commmand". What am I doing wrong?

[Stephen23]

MATLAB (nor any toolbox) does not have a function named MAPIT:

which mapit

'mapit' not found.

When I search the interent I can find several third-party toolboxes that have a function with that name.

Perhaps the textbook supplies its own functions? Or requires particular third-party tool to be used.

[Cris LaPierre]

We'd need to have more context about the exercise you are trying to complete. I wouldn't expect any major changes in MATLAB functionality, but will note that the book was published in 2000.

[John]

Thanks guys, didn't realize the textbook was so dated! Anyway I'll ignore the commands and enjoy the rest of the book, just thought I might be missing something! Matlab has worked great so far!

[John D'Errico]

That is something called a "book", printed on an outmoded medium called paper. Yes, something they used to use in the dark ages. ;-)

Anyway, I did some searching, but I was unable to find the codes. And, I presume it was not written by this @David Hill contributor to the site, since he is shown to be a Master's student on his profile.

I'd be surprised that the codes are not included as an appendix of the book.

[John]

Ahhh, I solved the "mystery", did some additional research in the front of the book, and you are right, the M-files are source code written by Prentice Hall to go along with the book. Should have been able to download the so called m-files, but in researching the site, it appears the files are missing or gone, no worries, glad I'm not going nuts.

[John D'Errico]

Well, this is not necessarily evidence that you are not going nuts, at least not strong evidence. :)

Possibly you could contact the author(s), either Hill or Kolman who I see was a co-author on the second edition. Or you could try contacting Prentice Hall, though they will probably not be of any help. Or just enjoy the book.

Finally, there are many texts out there that might be as useful, and do have code provided, for example:

https://www.mathworks.com/moler/chapters.html

though it is not exclusively a text on matrix algebra.