WorksheetsMATRICES 2
Total questions: 10
Worksheet time: 3570secs
Name
Class
Date
1.
Solve for the determinant of the following matrix:
⌈12 −3⌉
⌊−6 15⌋
*detA= ad-bc
⌈12 −3⌉
⌊−6 15⌋
*detA= ad-bc
a)
198
b)
162
c)
-333
d)
-9
2.
Calculate the determinant
a)
0
b)
none
c)
-32
d)
-8
3.
If A is a 2 × 3 matrix, and B is a 3 × 4 matrix, how many columns does AB have?
a)
2
b)
3
c)
4
d)
AB is not defined
4.
What is a23
a)
14
b)
4
c)
1
d)
3
5.
Matrices can be multiplied only...
a)
if the row of the first matrix is equal to the column of the second matrix.
b)
if the column of the first matrix is equal to the column of the second matrix.
c)
if the column of the first matrix is equal to the row of the second matrix.
d)
if the row of the first matrix is equal to the row of the second matrix.
6.
What would be the dimension of the matrix product AB?
If A1X4 and B4X7
a)
1X7
b)
4X4
c)
4X7
d)
7X1
7.
Multiply
a)
20 15 -10
30 -5 0
30 -5 0
b)
-20 15 -10
30 -5 0
30 -5 0
c)
1 8 3
11 4 5
11 4 5
d)
20 -15 10
-30 5 0
-30 5 0
8.
What are the dimensions of this matrix?
a)
2 x 3
b)
3 x 2
c)
6 x 1
d)
1 x 6
9.
These matrices are being multiplied. Determine the dimension/size of the new matrix.
a)
Can't multiply them
b)
4 x 2
c)
3 x 3
d)
4 x 3
10.
What are the dimensions of this matrix?
a)
3x1
b)
1x3
c)
3x3
d)
1x1
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