Question

A square matrix in which all
principal diagonal elements are zero
and aij=-aji is called​

Answer 1

Answer:

Square matrix A is said to be skew-symmetric if aij =−aji for all i and j. In other words, we can say that matrix A is said to be skew-symmetric if transpose of matrix A is equal to negative of matrix A i.e (AT =−A).

Step-by-step explanation: Let's take an example, see the image attached.

It is skew-symmetric matrix because aij =−aji for all i and j. Here, a12 = -6 and a21= -6 which means  a12= −a21.

Thank You, Hope it helps.