Question:

set that contains everything is known as

A.

universal set

B.

proper subset

C.

equivalent set

D.

unit set

Answer» a. universal set

Question:

Which of the following property does not hold for matrix multiplication?

A.

associative

B.

distributive

C.

commutative

D.

additive inverse

Answer» c. commutative

Question:

The set of positive integers is _____________

A.

infinite

B.

finite

C.

subset

D.

empty

Answer» a. infinite

Question:

Transpose of a rectangular matrix is a

A.

rectangular matrix

B.

diagonal matrix

C.

square matrix

D.

scalar matrix

Answer» a. rectangular matrix

Question:

The matrix A is idempotent if:

A.

a2 = a

B.

a = at

C.

a2 = at

D.

none

Answer» a. a2 = a

Question:

In a matrix multiplication for A and B, (AB)t

A.

at bt

B.

bt at

C.

1/ab

D.

ab

Answer» b. bt at

Question:

The Jacobian of p,q,r w.r.t x,y,z given p=x+y+z, q=y+z, r=z is ________

A.

0

B.

1

C.

2

D.

-1

Answer» b. 1

Question:

The determinant that results when the row and column in which that element lies are deletedis called:

A.

cofactor

B.

minor

C.

inverse

D.

none

Answer» b. minor

Question:

The determinant of matrix =4 63 8 is:

A.

14

B.

7

C.

-1

D.

3

Answer» a. 14

Question:

Sum of two numbers is 84. One of the numbers is 20 more than the other. The smallernumber is

A.

12

B.

22

C.

32

D.

42

Answer» c. 32