Question # 1

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

The simplest form of rectangular hyperbola is

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y = 1/x

y = x2

y = x-2

y = x3

A negative definite Hessian fulfills the second order conditions for.

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Maximum

Minimum

both maximum and minimum

Mini max

A inverse is defined only if A is a

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Square matrix

Column vector

Orthogonal matrix

Skew symmetric matrix

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

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Symmetric

Skew symmetric matrix

Idempotent matrix

Orthogonal matrix

A square matrix a of order 'n' is called a diagonal matrix if its non diagonal elements are.

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zero

Non zero

One

None 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

The value of the dependent variable where the graph cuts the y-axis is called.

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X - intercept

Y- intercept

Slope

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

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

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Union set

Intersection set

Universal set

Unit set

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

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Columns

Rows

Elements

Diagonal

"Null set is proper subset of all the non nul sets" this statement is.

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Always true

sometimes true

Never true

True subject to some conditions

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

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

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

Who is regarded as the founder of theory of sets.

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Adam Smith

Karl Frederich Gauss

George cantor

Euller

If every elements of a raw or column of a square matrix A is zero, then the value of the determinant .

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Equal

Zero

One

Negative related

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

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

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

Ordered Pairs of two sets are called.

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Elements

Function

Cartesian product

None of the above

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