Question # 1

For any square matrix A of order 'n' a +A is.

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Skew symmetric

Non skew symmetric

Symmetric

Non symmetric

If each element of a raw of column of a square matrix A is zero, then the value of the determinant. is.

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Equal

One

Zero

None of these

The associative law of union is

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AU (BUC= (AUB)

U C

AUB = BUA

BUC = BUA

A negative definite Hessian fulfills the second order conditions for.

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Maximum

Minimum

both maximum and minimum

Mini max

(A+B) + C =a +(B+C) This law of matrices is known as.

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Cumulative law

Associative law

Distributive law

Identity law

If any equation involving two variables, such as y -=2x + 1, the variable that appears on the right hand side of the equation is by convention called.

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Dependent variable

independent variable

Endogenous variable

Explained variable

If two sets contain the same distinct elements, then they are called.

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Equal sets

Unequal sets

Equivalent sets

All of the above

Ordered Pairs of two sets are called.

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Elements

Function

Cartesian product

None of the above

The simplest form of rectangular hyperbola is

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y = 1/x

y = x2

y = x-2

y = x3

An equation in which all variables are raised to the first power is known as.

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Linear equation

Non linear equation

Quadratic equation

Polynomial of degree two

A set totality of elements from all possible sets is called.

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Union set

Intersection set

Universal set

Unit set

A square matrix with 1's in its principal diagonal and zeros every where else is.

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Diagonal matrix

Identity matrix

Leading diagonal

Scalar matrix

The set of subsets of a set A is called.

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Power set of A

Complement of A

Both a and b

None of these

a possible use in encomia's for the circle or the ellipse is to model.

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Production possibility curve

Demand cuve

Isocost liine

Supply curve

If a consumer's budget constraint is given as P, X,+ Py Y = B thent he absolute slope of the budget line is.

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B

x/y

P/Py

None of these

Th transpose of the cofactor matrix is called.

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Adjoin of the matrix

Power of a matrix

Minor of the matrix

Rank of a matrix

If each element of a raw or column is a sum of two elements, the determinant can be expressed as the

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Sun of two determinants

Difference of two determinants

Multiplication of two determinants

Division of two determinants

if we are told that the two statements y = 3x2 and y = x + 10' are bout true at the same time , they are called.

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Implicit functions

explicit functions

Simultaneous equations

Quadratic equations

"No two elements of a set are identical" this statements is.

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Always true

Sometimes true

Not true

All of the above is possible

If matrix A is matrix of order n x m and B is another matrix of order m x n, then BA will be the matrix of order.

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n x m

m x n

n x n

m x m

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