Question about Texas Instruments TI-89 Calculator
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
SOURCE: Singular matrix error
I had this problem as well...Were you working on a SinReg equation by any chance? I was able to do every other type of regression (Linear, quadratic, cubic, ect..) In order to get Sinusoidal regression you need to make sure you arrow down to the Period box when entering the equation, and fill it in with the number of items in your table of values (a ten item list means a period of 10). That was the fix for me, so hopefully it works for you!
Posted on Feb 04, 2009
Tips for a great answer:
Aug 20, 2017 | Sharp Office Equipment & Supplies
Jan 05, 2016 | Casio Office Equipment & Supplies
Sep 16, 2014 | Casio Scientific Calculator FX-115ES PLUS...
Dec 11, 2013 | Sentry CA 756 Calculator
Sep 23, 2013 | HP 10s Scientific Calculator
Nov 29, 2012 | Texas Instruments TI-84 Plus Silver...
Oct 19, 2010 | Casio FX-115ES Scientific Calculator
Apr 19, 2009 | Texas Instruments TI-83 Plus Calculator
Apr 03, 2009 | Texas Instruments TI-89 Calculator
Jan 17, 2009 | Texas Instruments TI-89 Calculator
393 people viewed this question
Usually answered in minutes!
Level 3 Expert
Level 2 Expert
Level 3 Expert