What is the main diagonal of a matrix?a.The elements from the top left to the bottom rightb.The elements from the edges to the middlec.The elements from the middle to the edgesd.The elements from the top right to the bottom left

diagonalizing a matrix;

What is the trace of a matrix?a.The sum of all elements.b.The product of the diagonal elements.c.The difference of the diagonal elements.d.The sum of the diagonal elements

A matrix  A=(acbd)A=(abcd) has eigenvectors  (10)(10)  and  (−11)(−11)  with eigenvalues -3 and 1 respectively. By making use of an appropriate diagonalisation, or otherwise, find the matrix AA  and enter its entries in the boxes below. a=a=        b=b=        c=c=         d=d=

Write a program to obtain a matrix and find the sum of its diagonal elements.Note: Only square matrix.Input format :The input consists of the number of rows and columns separated by a space.The second line of the input is matrix elements.Output format :The output prints the sum of diagonal elements.Refer to the sample input and output for format specifications.Sample test cases :Input 1 :3 31 2 34 5 67 8 9Output 1 :15Input 2 :4 412 23 45 5678 89 98 8765 54 32 2114 25 36 58Output 2 :191

[a b c] is a:Question 4Answera.Row matrix.b.Diagonal matrix.c.Column matrix.d.Zero matrix.