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

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

if two sets do not have any common element, then they are called.

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Complement sets

Joint sets

Disjoint sets

None of these

A negative definite Hessian fulfills the second order conditions for.

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Maximum

Minimum

both maximum and minimum

Mini max

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

In Vann diagram the universal set is represented by

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Points within a rectangle

Points within a circle

Both a and b

None of these

any number raise to the power zero is always equal to.

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zero

one

two

The number itself

A polynomial equation with degree two a called.

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Linear equation

Quadratic equation

Parabola equation

All of the above

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

The objects constituting a set are called

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Estimates

Elements

Set object

Noe of these

The slope of a horizontal line is.

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One

Zero

Three

two

A diagonal matrix whose diagonal elements are equal is called.

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Unit matrix

Singular matrix

Scalar matrix

Non singular matrix

If A and B are symmetric matrix, then AB- BA is.

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Symmetric

Skew symmetric matrix

Idempotent matrix

Orthogonal matrix

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

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Union

Derivative

Set

Integral

If the columns of a given matrix A and B are changed into rows and vice versa, the matrix thus obtained is called the.

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Symmetric matrix

Transpose of a matrix

Singular matrix

Rank of matrix

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PPSC Economics Chapter 13 Mathematics in Economics MCQs With Answers

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