Question

Define trace of matrix and find the trace of
(1 3 -5 2 -1 5 2 0 1 )​

Answer 1

Answer:

1 -1 +1 =1

Explanation:

trace means sum of diagonal elements in a matrix

Answer 2

Answer:

Trace of the Matrix = 1

Explanation:

Trace of matrix: The trace of a square matrix A, called tr in linear algebra, is defined as the sum of entries on A's main diagonal. The sum of a matrix's eigenvalues is its trace, which is invariant when the basis is changed.

Given Matrix:

|  1  3  -5 |

|  2  -1  5 |

|  2  0  1  |

The sum of diagonal is which is the Trace of the matrix: 1 + ( -1 ) + 1 = 1