Matrix and Vector Quiz

Given matrix A=(23−14) and B=(0−2 51), what is matrix C=A+B?

• (21 45)

• (21 −65)

• (25 45)

• (21 43)

• (21 65)

If P=(−34 10) and Q=(2−1 −53), what is matrix P−Q?

• (−55 6 −3)

• (−13 −43)

• (1 −3 −43)

• (−55 −43)

• (−53 6 −3)

Given matrix X=(−10 23), what is the result of 3X?

• (−30 69)

• (−10 69)

• (−30 23)

• (−30 29)

• (−30 63)

What is the result of the multiplication of matrices (13 24)(57 68)?

• (1943 2250)

• (521 1232)

• (1922 4350)

• (1950 2243)

• (521 632)

If matrix A=(23 12) and B=(1−1 04), what is AB?

• (11 48)

• (1−3 08)

• (2−3 08)

• (21 48)

• (18 41)

Given matrix K=(x3 24) and L=(10 01). If KL=LK, what is the value of x?

• 1

• 2

• 3

• 4

• 5

What is the determinant of matrix (3−1 24)?

• 10

• 12

• 14

• 16

• 18

What value of x satisfies the determinant equation x3 2x+1=0?

• x=2 or x=3

• x=−2 or x=3

• x=2 or x=−3

• x=−2 or x=−3

• x=1 or x=6

What is the determinant of matrix 105 216 340?

• 1

• 2

• 3

• 4

• 5

What is the inverse of matrix (23 12)?

• (2−3 −12)

• (−23 1−2)

• (2−3 −1−2)

• (−2−3 −12)

• (23 12)