Matrices and Determinants

Dimensions?

• a

• b

• c

• d

Find the product.

• undefined

• -3   16
  17   12
  8   -10

• 3   12 
  -15  -8
  -1   -3

Find A+B

• 8     10
  8      1 

• 12     25
  7     1

• 10     30
  0     1

• can't add two together because the rows dont match columns

If |A| = 0, then A is

• zero matrix

• singular matrix

• non-singular matrix

• Identity matrix

You can multiply a 2X3 matrix by which matrix?

• 2X2

• 2X12

• 3X12

• 2X3

Perform scalar multiplication on the matrix

• A

• B

• C

• D

•If A is any square matrix and A’ is transpose of its. Then A+A’ is also a matrix of type

• •Symmetric Matrix

• •Diagonal Matrix

• •Non-diagonal Matrix

• •Skew-symmetric Matrix

Find the inverse.

• A

• B

• C

• D

If A is symmetric as well as skew-symmetric , then A is....

• Diagonal matrix

• Null matrix

• Identity Matrix

• Triangular matrix

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