Operations with Matrices and Determinants

Find the value of det (I).

• 18

• -18

• -8

• 8

What is the determinant of this matrix?

• 5

• -5

• 0

• -12

• 2

• 6

• 0

• -2

• 3

• 4

• 2

• 5

What must be true in order to ADD two matrices?

• They must be square.

• The dimensions must be equal.

• The determinant can't equal 0.

• The column of the 1st must equal the row of the 2nd.

Perform the indicated operation

• 
• 
• 
• 
• not possible

Perform the indicated operation

• 
• 
• 
• 
• not possible

Perform the following operation

• 
• 
• 
• 
• not possible

What do a, b, c and d equal in this matrix addition?

• a = -1, b = 10, c = 7, d = -11

• a = -1, b = 10, c = -11, d = 7

• a = 10, b = -1, c = 7 , d = -11 

• a = 10, b = -1, c = -11, d = 7

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