Posted by **Chris** on Tuesday, September 15, 2009 at 7:24pm.

(a) Show that if A is an m x n matrix and A(BA) is defined, then B is an n x m matrix.

(b) Show that if A has a row of zeros and B is any matrix for which AB is defined, then AB also has a row of zeros.

(c) Find a similar result involving a column of zeros.

Thanks!!!

## Answer this Question

## Related Questions

- Linear Algebra - a) Show that if A has a row of zeros and B is any matrix for ...
- Advanced Math - Find DE if matrix D= Row 1= -2,4,6 and ROW 2= 5,-7,1 and matrix ...
- science - 1 A ……... is a rectangular array of numbers that are ...
- Math - Hi! I need help with these two questions. Thanks! :) 1.) Can we multiply ...
- Math - A message was encoded using the matrix [7 2 3 1] and you can decode the ...
- Augmented Matrix - Perform row operations on the augmented matrix as far as ...
- algebra - When i have a matrix 4 X 4 and i have to multiply it by a 4 X 3 i know...
- linear algebra - 1)If A is an invertible matrix and k is a positive integer, ...
- Math - Fine the size of the following matrix and its additive inverse matrix. ...
- math,algebra II - I have to work with these types of problems dealing with ...