Re: matrix inversion
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Re: matrix inversion
The matrix that you want to invert is a singular matrix.
The determinant is zero. It does not have an inverse.
If you are trying to solve a system of equations, then
either there is no solution or there are infinitely many
solutions.
Use the rref command to determine which.
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Ben Sultenfuss <bsultenfuss@sfasu.edu>
Stephen F. Austin State University
Department of Mathematics and Statistics
1936 North Street, PO Box 13040, SFA Station
Nacogdoches, Texas 75962-3040
Voice: Office: 409-468-3805 Home: 409-560-5508
Fax: Office: 409-468-1669 Home: 409-560-0038
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> From: Jody <jody1@ALASKA.NET>
> To: CALC-TI@LISTS.PPP.TI.COM
> Subject: matrix inversion
> Date: Wednesday, December 31, 1997 02:30
>
> I'm trying to invert martrix[A] for this program that I'm writing, but
> the calc keeps spitting up an error "ERR:SINGULAR MAT". Anyone know
> why? There was a small note mentioned in some of my paperwork for this
> program that says that the rows can't be multiples of each other.
> However, since I'm not familiar with what happens when a matrix is
> inverted, I don't know exactly what's wrong. Can someone tell my why I
> can't do [A]-1[B] with this:
> [A]
> [-2 3 4
> 0 0 1
> -2 3 0]
> [B]
> [12
> 3
> 0]
> Thanks
>
> Jody Snider
> jody1@alaska.net