Question # 1

The function f : x→ y defined as f (x) =α∀x∈ X,α∈ y is called

Choose an answer

Constant function

Polynomial function

Identity function

Linear function

For the equation |x²| + |x| -6 =0, the roots are

Choose an answer

One and only one real number

Real with sum one

Real with sum zero

Real with product zero

Choose an answer

Ifᵨ> 1 , then the conic, is:

Choose an answer

Ellipse

Parabola

Hyperbola

None of these

The roots of (x - a)(x - b) = ab x2 are always

Choose an answer

Real

Depends upon a

Depends upon b

Depends upon a and b

sinα=

Choose an answer

2 sinαcosα

2 sinαcosβ

2 sinα/2 cosα/2

1+ tan²α/2

An event having more than one sample point is called

Choose an answer

Certain event

Compound event

Simple event

None

24 can be written as a product of

Choose an answer

Odd factors

Even factors

Whole factors

Prime factors

The angles of elevation of the top of a tower at the top and the foot of a pole of height 10 m are 30° and 60° respectively. The height of the tower is

Choose an answer

10 m

15 m

20 m

None of these

Let A is a 3 x 3 matrix and B is its adjoint matrix. If |B| = 64, then |A| =

Choose an answer

If a_n= 2n -3, write the first four terms

Choose an answer

-3, -1, 1, 3

1, 3, 5, 7

-1, 1, 3, 5

None of these

The function sine and Cosine have the closed internal as their range

Choose an answer

[1, 0]

[-1, 1]

[0, 1]

[-1, 2]

The matrix A = [aij]1xn is a

Choose an answer

Vector

Rectangular matrix

Column vector

Square matrix

Choose an answer

none of these

The standard parabolic form of the equation f(x) = x² +4 x +1 is

Choose an answer

x(x+4)+1

(x+2)²-3

(x+4)³ + 9

x(x-2)²+1

θ and 2kπ+θ are the ________ angles

Choose an answer

Quadrantal angles

Coterminal

Allied

None

The magnitude of vector a 2i-7j is

Choose an answer

√23

√43

3

√53

A matrix with a single column is called

Choose an answer

Column matrix

Row matrix

Identity matrix

Null matrix

If the roots of ax²- bx - c = 0 change by the same quantity, then the expression in a, b, c that does not change is

Choose an answer

The exterior angle of the interior angle C of he quadrilateral whose vertices are A(5,2),B(-2,3),C(-3,-4),D(4,-5) is

Choose an answer

30°

60°

45°

90°

Choose an answer

Associative law of multiplication

Commutative law of addition

Commutative law of multiplication

Associative law of addition

In-radius is denoted by

Choose an answer

r

η

r2

R

Choose an answer

0

1

undefined

x = ________ is in the solution of 2x - 5 > 0

Choose an answer

0

2

-2

3

The conic is a parabola if

Choose an answer

e < 1

e > 1

e = 1

None of these

w^-1= ______

Choose an answer

0

1

w

w²

There is no integer n for which 3n is

Choose an answer

Even

Prime

Odd

Real

sin^-1[-1/2] = ______

Choose an answer

The set of complex numbers forms

Choose an answer

Commutative group w.r.t addition

Commutative group w.r.t multiplication

Commutative group w.r.t division

Non commutative group w.r.t addition

The st. lines whose direction cosines satisfy al + bm + cn = 0, fmn + gnl + hlm=0 are perpendicular if

Choose an answer

cos(3π/2 +θ) = _____;

Choose an answer

sinθ

cosθ

-sinθ

-cosθ

More Classes

Other Links

ECAT Pre General Science Mathematics Online Test MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer