Question

Please refer to illustration for question.

Determine whether the matrix is symmetric. 9 13 9 -5 -2 4 -2 0 14

Answer 1

solution First we recall the definition of a cymmetric matrix, -square matrix 'A' is called symmetric if AT A. Visiofsn aif = afi 2 Now given matrix in 3 9 g - 5 -2 ( Day) 4. -2 Here 912=9 913 4. a21 a31 932 a23 = -2 AT 9 4 3 9 4 -2 -5 -2 م A or A = AT jic aig a afi v ici, je 3 A is symmetric matrix. ane