# inverse matrices

• March 1st 2009, 09:55 AM
hmmmm
inverse matrices
how do you find the inverse of an inconsistent 3x3 matrix??
thanks
• March 1st 2009, 10:16 AM
sbcd90
Use jordan-gaussian method for finding the inverse.
• March 1st 2009, 10:51 AM
HallsofIvy
Quote:

Originally Posted by hmmmm
how do you find the inverse of an inconsistent 3x3 matrix??
thanks

You don't. If a matrix is inconsistent (the equation Ax= b has no solution) then it has no inverse. If A has an inverse,then $A^{-1}Ax= x= A^{-1}b$ contradicting the definition of "inconsistent".