doc matrix_exp_multiply

[yizhang-yiz]

Submission Checklist

• Run unit tests: ./runTests.py src/test/unit
• Run cpplint: make cpplint
• Declare copyright holder and open-source license: see below

Summary

documenting #2539 .

Intended Effect

docs for two new functions matrix_exp_multiply & scale_matrix_exp_multiply.

How to Verify

doc

Side Effects

n/a

Documentation

Copyright and Licensing

Metrum Research Group, LLC

By submitting this pull request, the copyright holder is agreeing to license the submitted work under the following licenses:

• Code: BSD 3-clause (https://opensource.org/licenses/BSD-3-Clause)
• Documentation: CC-BY 4.0 (https://creativecommons.org/licenses/by/4.0/)

[bob-carpenter]

This should be part of the PR to add the functions to the language.

I had one internal change, too.

If the language changes already went in, let me know, and we can merge this. I just don't want the doc to get ahead of the code.

[bob-carpenter]

[optional]

This should really be \farg{t} * \farg{A} in the less efficient form. I'll approve and leave it up to you whether to fix it or not.

[bob-carpenter]

Looks good. I'm moving the one nitpicky point to the next manual issue.