Question # 1

The distance of the point (2,3) from origin is

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5

2

3

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-1

0

1

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For f(x) = x2, what is the value of f(a) +f (-a) in terms of a?

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3a2

2a2

2a

-7a

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none of these

The function discontinuous at x = 0 is (1) tan x (II) cot x (III) sec x (iv)cosec x)

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I & III

I & IV

II & IV

II & III

The roots of the equation ax²+ bx + x = 0 are real and distinct if

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b²- 4ac <0

b²- 4ac = 0

b²- 4ac > 0

None of these

a chord passing through the focus of a parabola is called a:

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Focal chord

Latus rectum

Tangent

Directrix

F(x) = x^xdecreases in the interval

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(0, e)

(0, 1)

(-∞,0)

None

At a point 15 meters away from the base of a 15 meters high house, the angle of elevation of the top is

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90°

60°

30°

45°

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The set of complex numbers forms a group under the binary operation of

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Addition

Multiplication

Division

Subtraction

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