Matrices Elements and Dimensions and Types

What is the right name for this matrix's dimension?

• 4x2 dimension array

• 2x4 dimension array

In Matrix R (pictured) what is the value of element R_3,2

• 8

• 9.01

• 6

• 1

In this image, what kind of vector is "b"?

•  A "Row Vector" 

• A "Column Vector"

What would two matrices need to be considered 'equal'?

• The same dimensions and different element values

• The same dimension and the same element values

• Two matrices can never be equal

• two matrices are 'equal' when they are added together to create a matrix of only "0's"

The assignment problem is always a ______________matrix

• unit

• square

• rectangle

• triangle

What is a matrix with the same number of rows as columns?

• square

• zero

• equal

• equivalent

How would a scalar multiplication be carried out for a matrix?

• Add the Scalar to every element in the matrix

• Dot product the rows of one matrix with the columns of the other matrix

• Multiply every element with the scalar to create a new matrix

• subtract the elements in the first matrix from the elements of the second matrix

Solve this Matrix Addition

• 11    8
  -4     2

• 3     2
  -6    -6

• -3    2
  -4    -6

• 10    8
  -6    2

Solve this Matrix Subtraction

• 3    -8
  0   -1

• 3   -4
  8  -13

• -3   8
  0    1

• 3   -8
  -8    1

What is a Matrix?

• An equation of over 5 numbers or symbols 

• A set of numbers in rows and columns

• A method of finding the n^th value of a series

• A complicated number system