if A is a square matrix then prove that AAT+ATA IS A SYMMETRIC Share with your friends Share 0 Rishabh Daga answered this (AA' + A'A)' = A'A'' + A''A'= (AA' + AA')therefore AA' + A'A is symmetric 3 View Full Answer Rishabh Daga answered this (AA ' + A 'A) ' = A 'A ' ' + A ' 'A '= (AA ' + A'A )therefore AA ' + A 'A is symmetric 0
