Question # 1

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The set {1, -1, i, -i}

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Form a group w.r.t addition

Form a group w.r.t multiplication

Does not form a group w.r.t multiplication

Not closed under multiplication

tan(π-θ)=_____;

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tanθ

cotθ

-tanθ

-cotθ

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I andII quadrants

II andIII quadrants

II andIVquadrants

none of these

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A non-terminating non_recurring decimal represents an

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Irrational no

Both a & c

Rational no

None of these

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A

A'

U

None of these

The maximum value of the quadratic function f(x) = 2x2-4x+7,is

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3

5

-3

-5

The direction cosines of any normal to the xy-plane are

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<1, 0, 0>

<0, 1, 0>

<1, 1, 0>

<0, 0, 1>

If a, b, c are the measures of the sides of a triangle then

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0

1

-1

none of these

How many term are there in the A.P, in which a₁ = 11 , a_n =68, d=3

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30

27

20

21

If f(x) = x²then f(0) is

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0

1

2

none of these

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2 b

2 a

2 ab

a + b

A Series which does not coverage to a Unique sum is called

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Harmonic Series

Oscillatroy Series

Arithmetic Series

None of these

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0

1

2

3

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Associative property of addition

Commutative property of addition

Distributive property

Additive identity

If the terminal rays of an angle falls on any axis then the angle is called

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Allied angle

Acute angle

Standard position

Quadrantal angle

The general solution of tan 3x = 1 is

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The expansion of (1 + 2x)^-2is valed if

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| x | < 1/2

| x | < 1

| x | < 2

| x | < 3

The symbol of irrational is

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W

N

Q

Q'

The obtuse angle between lines = -2 and y = x +2 is

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120°

135°

150°

140°

The equation of a line parallel to the tangent to the circle x²+ y²= 16 at the point (2, 3) and passing thro' the origin is

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2x + 3y = 0

2x - 3y = 0

3x + 2y = 0

3x - 2y = 0

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Symmetric

Skew-symmetric

Hermitian

Skew hermitian

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A rational number

An irrational number

An odd number

A prime number

Which of the following is a quadrantal angle

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30°

45°

60°

90°

Area of the triangle whose vertices are (2,3),(0,1),(0,0) is

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6

2

4

1

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For f(x) = x² + px +1, if f(3) = 3 then P =

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3/7

-2/5

-7/5

-7/3

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