CBSE Guess > Papers > Important Questions > Class XII > 2010 > Maths > Mathematics By Mr. Anil Kumar Tondak CBSE CLASS XII Matrices Q. 1. Construct a 3´4 matrix, whose elements are given by aij= Q. 2. Construct a 2´3 matrix A = [aij] whose elements are given by aij = Q. 3. If A = Q. 4. If A = , then show that I+A= (I – A) Q. 5. Express the matrix A= A = using elementary transformations. Q. 7. If f(x)= Q. 8. Show that the matrix B¢AB is symmetric or skew-symmetric according as A is symmetric or skew symmetric. Q. 9. If A and B are invertible matrices of the same order, then prove that (AB)-1 = B-1A-1 Paper By Mr. Anil Kumar Tondak |