Question # 1

d/dx (√x) =

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2√x

1/√x

1/2√x

None of these

If f(x) : A → B and g (x) : A → B then Dom [f(x) + g(x)] is

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Dom f(x) ∩ Dom g (x)

Dom f(x) ∪ Dom g(x)

[Domf(x)]² - [Dom g(x)]²

[Dom g(x)]²-[Domf(x)]²

If Cosθ =0, Then θ=

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nπ/2

(2n + 1)π/2

(2n - 1)π/2

(n ±1)π/2

If f (x) = x/x²- 4 then which is not included in the domain of f(x)

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0

-2

1

4

Every prime number is also

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Rational number

even number

Irrational number

multiple of two numbers

The difference of two consecutive terms of an A.P is called

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Zero

One

Four

Infinite

The axis of the parabola y² = 4ax is

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x =0

Y =0

X = y

X = -y

Derivative of strictly increasing function is always

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Zero

Positive

Negative

Both A and B

The perpendicular bisector of any chord of a circle

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Passes through the center of the circle

Does not pass through the center of the circle

May or may not pass through the center of the circle

None of these

The length of rectangle is twice as much as its breadth. If the perimeter is 120 cm, the length of the rectangle is

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Same as the original determinant

Additive inverse of the original determinant

Both A and B

Adj of the original matrix

The two consecutive positive integers whose product is 56 are

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7, 8

14, 4

28, 2

56, 1

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