Thursday
October 30, 2014

Homework Help: LINEAR ALGEBRA

Posted by LEON on Sunday, October 24, 2010 at 10:11pm.

How to prove or disprove
(a)if A has a zeronentryonthe diagonal then A is not invertible
(b)if Ais not invertible then for every matrix B, AB is not invertible
(c)if A is a nonzero 2X2 matrix such that A^2+A=0, then A is invertible

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

College Math : Linear Algebra - Suppose A is a square matrix satisfying the ...
linear algebra - 1)If A is an invertible matrix and k is a positive integer, ...
Algebra - Let A and B be n x n matrices, assume AB is invertible and show that ...
math - If A^TA is an invertible matrix, prove that the column vectors of A are ...
math - I need help with this one... Thanks!!!! Prove the following statement: ...
Linear Algebra - Consider the linear transformation T: R^3->R^3 which acts by...
MATHS----Matrix - For a given square matrix A the predicted values of matrix B ...
Diagonalize - construct a nondiagonal 2 x 2 matrix that is diagonalizable but ...
Matrix - Let A be an invertible n x n matrix, and let B be an n x p matrix. ...
Math - Let A, B, and 0 be 2x2 matrices. Assuming that A is invertible, find a ...

Search
Members