Question # 1

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

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Cumulative law

Associative law

Distributive law

Identity law

A positive definite Hessian fulfills the second order conditions for

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Maximum

Minimum

Both maximum and minimum

Mini max

If matrix A is of m x n dimension, then A will be

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n x m dimension

m x n dimension

n x p dimension

m x m dimension

The matrix A multiplies by its inverse will b e a.

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Identity matrix

Skew symmetric matrix

Idempotent matrix

Adjoin of a matrix

Who is regarded as the founder of theory of sets.

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Adam Smith

Karl Frederich Gauss

George cantor

Euller

Which method is used for finding inverse of a matrix.

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Gauss elimination method

Henrich standard method

Co factor method

Both a and c

The slope of a horizontal line is.

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One

Zero

Three

two

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 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 set continuing no elements is called.

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Null set

mpty set

void set

all of the above

Union of A and a null set is equal is.

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Intersection of A and null set

Null set

Both a and b

A

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

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Symmetric

Skew symmetric matrix

Idempotent matrix

Orthogonal matrix

Given or known values in an equation are called.

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Constants

Parameters

Coefficients

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

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

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 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

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

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Union

Derivative

Set

Integral

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 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

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