matrix and determinant Quiz

1. A matrix A is both symmetric and skew symmetric if A is

• Null matrix

• unit matrix

• row matrix

• none of these

If A and B are invertible matrix then (AB)^-1 =

• A^-1B^-1

• AB

• B^-1A^-1

• none of these

If A is any invertible matrix then A is

• square matrix

• non singular matrix

• both

• none of these

1. Let A be a square matrix of order 3x3 then| kA| = .

• k |A|

• k²|A|

• k³|A|

• 3k|A|

Tags

CCSS.HSN.VM.C.7

1. which of the following is correct

• determinants is a square matrix

  
  

• determinants is a number associated to a matrix

• determinants is a number associated to a square matrix

• none of these

If the order of matrix A is m×p. And the order of B is p×n. Then the order of matrix AB is

• m × n

• n × m

• n × p

• m × p

When you multiply a matrix by the identity matrix, you obtain the

• inverse matrix.

• transpose matrix.

• Identity matrix

• original matrix.

Tags

CCSS.HSN.VM.C.10

When you multiply a matrix by the inverse matrix, you obtain the

• inverse matrix.

• transpose matrix.

• Identity matrix

• original matrix.

Tags

CCSS.HSN.VM.C.10

Two matrices A and B are multiplied to get AB if

• both are rectangular both have same order

• no of columns of A is equal to columns of B

• no of rows of A is equal to no of columns of B

• no of columns of A is equal to no of rows of B

If |A| = 0, then A is

• zero matrix

• singular matrix

• non-singular matrix

• Identity matrix

Tags

CCSS.HSA.REI.C.9