Editing Graphing calculator (section)

=== Computer algebra systems ===
[[File:A graph GIF being captured from a TI-89 Titanium.gif|thumb|The Texas Instruments TI-89 Titanium graphing a sine type graph. (Generated from TI ScreenCapture software on TI Connect CE.)]]
Some graphing calculators have a [[computer algebra system]] (CAS), which means that they are capable of producing symbolic results. These calculators can manipulate algebraic expressions, performing operations such as factor, expand, and simplify. In addition, they can give answers in exact form without numerical approximations.<ref>{{cite web|url=https://blogs.uchicago.edu/uei/technology_in_education/the_role_of_computer_algebra_s.shtml|title=The Role of Computer Algebra Systems (CAS) in Math Teaching and the Common Core|website=University of Chicago Blogs|access-date=25 June 2014|archive-url=https://web.archive.org/web/20140810122830/https://blogs.uchicago.edu/uei/technology_in_education/the_role_of_computer_algebra_s.shtml|archive-date=10 August 2014|url-status=dead}}</ref> Calculators that have a computer algebra system are called symbolic or CAS calculators.