Question

Let A be an orthogonal non-singular matrix of order n, then  is equal to :

Solution

Correct option is

  

  

    

                         .

SIMILAR QUESTIONS

Q1
Q2

The set of equations  

        ;  

        ;  

        

.

Q4
Q5

 

If xyz are integers in AP, lying between 1 and 9, and x51, y41 and z31 are three-digit numbers then the value of

         

Q7
Q8

Let p be a non-singular matrix  (O denotes the null matrix), then p–1 is ;

Q9

If D = diagonal [d1d2d3, … dn] where  thenD–1 is equal to:

Q10

A’ is any square matrix, then det  is equal to :