Question

If A={1 1 1}
{1 2 3}
{1 4 9}
and B={2 5 3}
{3 1 2}
{1 2 1} ,then prove that(AB) ^-1=B^-1 A^-1. plz answer fast...​

Answer 1

The function vechm : Rm ( m + 1 ) / 2 + Rmxm is defined such that : vechm ( vech ... Then , vec ( A ) = ( 1 , 2 , 2 , 3 ] T and vech ( A ) = [ 1 , 2 , 3 ] . ... See Exercise 4.1-11 for a proof of (1), ( 2),.

Answer 2

Answer:

see the attached file photo