Question # 1

The determinant of a matrix and that of its transpose are

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Equal

Zero

One

Negatively related

The slope of a horizontal line is.

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One

Zero

Three

two

The increase in dependent variable that results when the independent variable increases by one unit in a simple lines. function is called.

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Y intercept of the curve

Slope of the curve

X intercept of the curve

Marginal value

The sufficient condition required for the matrix to posses inverse is that the matrix should be.

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square matrix

Singular matrix

Non singular matrix

Orthogonal matrix

Collection of well defined distinct objects thought of as a whole is called

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Union

Derivative

Set

Integral

The elements in the Horizontal line in a matrix is called.

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Columns

Rows

Elements

Diagonal

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

If A is a square matrix of order ' n' and lis the unit matrix of the same order then A 1 is equal to.

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A

1A

1

Both a and b

The signed minor of the matrass A is called.

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Adjoin

Co factor

Minor

Rank

Given the demand and supply cautions qo = -8p + 2000 and qs = 12 p - 200 respectively the equilibrium price.

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p = 100

p = 110

p = 120

p = 140

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

A diagonal matrix whose diagonal elements are equal is called.

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Unit matrix

Singular matrix

Scalar matrix

Non singular matrix

The function y = 2x + 1 and x = 1/2 y - 1/2 are said to be.

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Non linear functions

Inverse functions

Step functions

All the above

A possible use in economies for the circle of the ellipse is to model.

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Production possibility curve

Demand curve

Iosco line

Supply curve

A linear function of the form 6x2 - 2y + 8 = 0 is known as.

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Explicit function

implicit function

Quadratic function

All of the above

The set which contains all the element of the two given sets A and B, avoiding duplication, is called.

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Intersection of A and B

Union of A and B

Set A and B

None of these

If A and B are symmetric matrices, then A +B is

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Symmetric

Non symmetric

Skew symmetric

Non skew symmetric

The point at which the graph cuts the x axis is called.

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x- intercept

y - intercept

slope

None of these

if A = A , then A is

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Symmetric matrix

Skew symmetric matrix

Identity matrix

Orthogonal matrix

(A+B) = (B+A) this law of matrices is known as.

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Cumulative law

Associative law

Distributive law

Identity law

The determinant of quadratic form is called.

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Jacobian determinant

Hessian determinant

Discriminant

None of these

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