The online textbook also has a graphing calculator available (under the Tools pull-down menu). To find selected answers in the online textbook choose Student Handbook from the left pull-down menu and Selected Answers from the right menu.
Virtual TI83 Calculator Click on the calculator above, save the files to your desktop. Open up the file and double click on the vti83.exe icon. You should now have a virtual TI83 to help you with your homework.
(This will only work on a PC or a Mac that can run Windows)
Instant Scientific Calculator