Question

For what value of x the matrix( 0 0 0) (-2 0 -4) (3 4 x+5) is skew symmetric matrix​

Answer 1

Answer:

x= -5

Step-by-step explanation:

A =[ 0 0 0 : -2 0 -4 : 3 4 x+5 ]

(A)^T =[0 -2 3 : 0 0 4 : 0 -4 x+5 ]

in skew symmetric matrix, A = -(A) ^T

A +(A) ^T = 0

[0 -2 3 : -2 0 0 : 3 0 2x+10 ] = 0

2x+10 = 0

2x = -10

x = -5