Basic Operations and Determinant of Matrices

what is a matrix?

• A matrix is a rectangular array of numbers.

• a matrix is squares with numbers in them

• a matrix is always a 2 x 2 thing

• all of the above

What the numbers A11, A12 are called

• numbers of the matrix

• elements of the matrix.

• elements of matrix A.

• numbers and letters of the matrix

• all of the above

Its elements are denoted by?

• non of them

• numbers

• capital letters

• small letters

Matrices are denoted by?

• letters

• numbers

• shapes

• all of the above

Element a32 is belongs to which row and column in a given matrix A.

• 2nd row, 3rd column

• 3rd row , 2nd column

• can’t decide

• None of the above

What is the order of given matrix

2 4 5 5 7

7 5 7 8 1

9 0 3 2 4

• 5 × 3

• 5 × 5

• 3 × 5

• 3 × 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

Tags

CCSS.HSN.VM.C.8

Subtract

• 3    -8
  0   -1
• 3   -4
  8  -13
• -3   8
  0    1
• 3   -8
  -8    1

Tags

CCSS.HSN.VM.C.8

Multiply

• 20     15    -10
  30     -5         0
• -20      15     -10
  30     -5          0
• 1        8       3
  11     4        5
• 20     -15     10
  -30         5        0  

Tags

CCSS.HSN.VM.C.8

Find the product of the two matrices.

• undefined
• -3   16
  17   12
  8   -10
• 3   12 
  -15  -8
  -1   -3

Tags

CCSS.HSN.VM.C.8