What’s New at BrownMath.com
Copyright © 2015–2019 by Stan Brown
This page tracks significant updates to the site.
Smaller changes are tracked in the “What’s New”
sections of the individual pages.
- Following a suggestion by Ernest Brock, modified two tests for
equality in the MATH200A
and MATH200B programs, to
compensate for the calculator’s handling of floating point.
- Gave the Site Map a bit of a
facelift, for a cleaner appearance.
- Google searches and other links to Google are now https instead of
- Links displayed when you print BrownMath.com pages are now
https instead of http. (The pages themselves have been https since
- BrownMath.com is now served up as secure HTML (https
protocol). All old bookmarks are redirected automatically.
- The textbook Trig without Tears got
a long-overdue makeover. I added more examples, more
pictures, and a set of practice problems (with full solutions) for
every chapter. There’s a new chapter on how trig sheds light on
complex numbers, and new or rewritten sections in several other
chapters. The asides that were in a separate Notes chapter have
moved, as BTWs, to the chapters where they are most relevant.
- On the algebra front, there’s a new article,
Desnesting Radicals (or Unnesting Radicals).
- Change “What’s Different between TI-83 and TI-84?”
to Differences among TI-83s and TI-84s. Update the article for the color
models of TI-84, and firmware upgrades to the black&white
- All the Excel workbooks in the
business sections of the site are now in
Excel 2007–2016 format.
- Trig without Tears had a vintage 2002 program for
solving triangles on the TI-83. I thoroughly overhauled it and made it
compatible with all TI-83 Plus and TI-84 Plus models, including the
new color models, then moved it to a
new article with worked examples
and screen shots.
- I was using obsolete code for the Donate button, and it took you
to a PayPal page that didn’t even mention BrownMath.com.
(Still, thanks to the people who persevered and made donations!)
I’ve fixed that.
- The site map now includes icons
for TI-83/84 procedures.
- Several articles weren’t referenced from the
site map or the section index
pages; now they all are.
- “Binomial Probability Distribution on TI-83/84” is
withdrawn, because the
textbook does a better job.
The MATH200B program
didn’t display well with the new color TI-84 models, TI-84 Plus
C Silver Edition and TI-84 Plus CE. I first created separate programs
for the new calculators, but that was a dead-end approach.
Both MATH200B and
MATH200A now sense whether
they’re running on a high-resolution TI-84, and adjust their
display format accordingly. Sometimes that even lets one screen hold
the information of two screens on the older calculators.
New Web site!