Question # 1

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real part of z

imaginary part of z

conjugate of z

modulus of z

The roots of the equation ax²+ bx + c = 0 are complex/imaginary if

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b²- 4ac < 0

b²- 4ac = 0

b²- 4ac > 0

None of these

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2x - 3x + c

x²- 3x + c

sn (2sin-10.8)

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0.56

0.69

-0.16

0.96

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The set {-1, 1} is

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Group under the multiplication

Group under addition

Does not form a group

Contains no identity element

A ________ divides the plane into left and right half planes.

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Vertical line

Horizontal line

Non vertical line

Inequality

______________ invented a symbolic way to write the statement "y is a function of x" as y= f(x)

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Leibniz

Newton

Euler

None of these

There may be ______ feasible solution in the feasible region

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Infinite

Finite

Defined

None of above

The equation of the tangent at vertex to the parabola is y2 = -8(x -3)

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y=0

x=3

x=1

x=5

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1

-1

0

I

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A complex number

A rational number

A natural number

An irrational number

If 5,7 and 9 are A.Ms between a and b, then a and b is equal to

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2 and 12

1 and 10

3 and 11

-7 and 2

If s = 2t³- 3t²+ 15t - 8 is the equation of motion of a particle, then its initial velocity is

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8

15

-6

None

If the distance of any point on the curve from any of the two lines approaches zero then it is called

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Axis

Directrices

Asymptotes

None

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(3, 1, -2)

(3, -2, 1)

(2, -1, 3)

(-1, -2, -3)

an - an-1 will be common difference in an A.P if

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n = 1∀n∈ N

n>1∧n∈N

n∈Z

None of the above

The complement of set A relative to universal set U is the set

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all are correct

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¹⁰C₆

¹⁰C₅

¹⁰C₄

None

The solution set of x²- 5x + 6 = 0 is

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{1, 3}

{2, 3}

{1, 2}

None of these

If A is such that a,A,B are in A.P then A is called

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A.M

Common ratio

Common difference

None of these

Period of cos x is _____

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0

1

2

4

If #n = (n-5)²+ 5, then find #3 x #4.

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54

12

4

9

Sequence also called..............

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Series

Function

progressions

Elements

The period of the trigonometric function y = sin x cos x is

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2π

π

4π

π / 2

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