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Matrix Operations
Multiplying Matrices
Determinants
Inverses
Vocabulary
100
Evaluate A + B
What is -3, 0, -2, 10
100
A*B
What is 5, 36 1, 31
100
Det (A)
What is 7
100
A ^-1
What is 2/7, -3/7, 5/7, -4/7
100
A matrix with the same number of rows as columns
What is square matrix
200
Evaluate A - 2B
What is -6, 9, -11, -14
200
B * A
What is 11, -3 -52, 25
200
Det (B)
What is 17
200
B ^(-1)
What is 8/17, 3/17 -3/17, 1/17
200
each number inside a matrix is called this
What is an element
300
3A - 4B
What is -16, 21 -27, -26
300

C*D

What is 3, 27, 3, -3, 37, 4, -9, 18, 9

300

Det (C)

What is 51

300
Write the inverse of a matrix with elements a and b in the first row and elements c and d in the second row.
What is 1/(ad-bc) times d -b -c a
300
the product of a 7x8 matrix and an 8x2 matrix will yield this...
What is a 7x2 matrix
400

3A - (3/4)B

-51/4, 45/4, -69/4, 0

400

D*C

What is 28, 22, 1, 6, 15, 0, 39, 39, 6

400

Det (D)

What is 27

400
When can the inverse not be found
When the determinant equals zero
400

If AB=BA=I, then we can say A is this

What is the inverse of B

500
(1/2)A - (5/4)B
What is -13/4, 21/4 -25/4, -9
500

2C*D

What is 6, 54, 6, -6, 74, 8, -18, 36, 18

500
Find the area of the triangle with vertices (6,3), (1,5), and (-1,4)
What is 4.5 units squared
500

What are the two ways to find the determinant... explain each method in detail

What is expanding by minors and using "downs-ups"

500
A 3x3 identity matrix looks like this:
What is 1 0 0 0 1 0 0 0 1