Question about Texas Instruments TI-89 Calculator
What do you want to do with it? If you want just to enter it, you do so on the command line.
Here are exemples of solutions
Under [Mode][F2] exact/aprox set to exact
solve(x^2+x-5=0,x) finds the exact solutions the top ones
Under [MODE][F2] Exact/Aprox set to Approximate you get approximate numerical solutions, the bottom ones.
There is another command nSolve( which solves numerically for an equation. You can specify a range of values where solution is suspected to be.
Hope it helps
Posted on Sep 13, 2009
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
No need to enter R squared. If it has meaning it will display in the stats variables screen ( 2nd F7 ).
Hope it helps.
Posted on Sep 14, 2009
Tips for a great answer:
Sep 15, 2011 | Texas Instruments TI-30 XIIS Calculator
May 10, 2011 | Texas Instruments TI-Nspire Graphic...
Mar 03, 2010 | Texas Instruments TI-83 Plus Calculator
Jan 17, 2009 | Texas Instruments TI-89 Calculator
Dec 03, 2008 | Texas Instruments TI-89 Calculator
Nov 12, 2008 | Texas Instruments TI-89 Calculator
Apr 27, 2008 | Texas Instruments TI-83 Plus Calculator
Apr 26, 2008 | Texas Instruments TI-89 Calculator
2,671 people viewed this question
Usually answered in minutes!
Level 3 Expert
Level 3 Expert
Level 2 Expert