Question # 1

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If n is any positive integer then 2ⁿ> 2(n + 1) is true for all

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An equation which holds good for all values of variables is called

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Equation

Conditional equation

Constant

None

The solution set of the equation tan^-1x - cot^-1x = cos^-1(2 - x) is

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[0, 1]

[-1, 1]

[1, 3]

None of these

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1

2

3

None of these

If f (x) = 2x+1 then fof (x) = _______;

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4x+3

2x +3

4x +1

None of these

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Two tangents drawn from (2,3) to the circle x2+y2 =9 are

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Real and distinct

Imaginary

Real and coincident

None of these

Which of the following is a quadrantal angle

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100°

200°

170°

270°

Multiplicative inverse of "1" is

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0

-1

1

{0, 1}

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5

20

9

4

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