Saturday

March 28, 2015

March 28, 2015

Posted by **katy** on Wednesday, December 16, 2009 at 8:30pm.

- math -
**Marth**, Wednesday, December 16, 2009 at 9:13pmlet A be an m by n matrix and B be a n by p matrix. Then A*B is defined. Also, A^-1 is an n by m matrix, and B^-1 is an p by n matrix. So B^-1 * A^-1 is also defined, but A^-1 * B^-1 may not be.

Or, in other words, the commutative property of scalar multiplication does not apply to matrices.

**Answer this Question**

**Related Questions**

linear algebra - if: A and B are matrices and A^2 is similar to B^2 Is A ...

math - Which of the following subsets of the vector space Mnn are subspaces? (a...

Matrices (math) - 0.433= (45.6*A) + (3.152*B) 0.3363= (11.92*A) + (37.675*B) ...

Math: matrices - If A and B are both square n x n matrices, If AB = I, prove BA...

matrices - Two matrices can be multiplied only if their sizes are compatible. ...

math - step by step how do we find the value of x and y in this matrices by the ...

math - step by step how do we find the value of x and y in this matrices by the ...

Urgent please help! matrices - solve using matrices x+3y-3z=12 3x-y+4z=0 -x+2y-z...

Math - I have a few questions about T-Matrix. In excel, I am suppose to work ...

Math (matrices) - No one answered my matrix question. Let me rephrase: Let A, B...