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

Matrix multiplication does not satisfy

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Associative law

Distributive law

Commutative law

None of the above

The slope of a horizontal line is.

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One

Zero

Three

two

A set containing only one element is termed as

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Unit set

Singleton set

Both a and b

None of these

The determinant of quadratic form is called.

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Jacobian determinant

Hessian determinant

Discriminant

None of these

A polynomial equation with degree two a called.

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Linear equation

Quadratic equation

Parabola equation

All of the above

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

Union of A with B is same as union of B with A, that is AUB = BUA is termed as

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Associative law of union

Cumulative law of union

Reflective law

All the above

AB = BA = 1 , then B is said to

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Ad joint of matrix of A

Inverse matrix of A

Determinant of A

Cofactor of a

The set of 'stars in the sky' is an example of

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Countable set

Infinite set

Finite set

unit set

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

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

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Symmetric

Skew symmetric matrix

Idempotent matrix

Orthogonal matrix

The simplest form of rectangular hyperbola is

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y = 1/x

y = x2

y = x-2

y = x3

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

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x- intercept

y - intercept

slope

None of these

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 function where a variable x can only very in jumps, is often called.

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Non linear functions

Inverse function

Step function

All of above

Union of A and the universal set is

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A

A'

Universal set

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

If the determinant formed by the elements of the matrix A is equal to zero, then the matrix is.

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Skew symmetric

Singular

Symmetric

Non singular

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

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