Question # 1

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What is the number of elements of the power set of {0, 1}

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1

2

3

4

The differential equation representing the family of curves y = A cos (x + B), where A, B are parameters, is

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The physical quantity which possesses both magnitude and direction is called a

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scalar

vector

constant

none of these

The term independent of x is the expansion (x³+1/x)¹²

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295

495

395

722

If f(√x)=sin x , then f′(x) =______;

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2xcosx2

cosx2

cos√x

None of these

The real number system contains.

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Positive Numbers

Negative numbers

Zero

(option a, b and c)

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I

14 I

0

None of these

Multiplicative inverse of 0 is

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0

1

±1

Does not exist

If one root of 5x2 + 13x + k = 0 be the reciprocal of the other root the value of k is

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0

2

1

5

cos (α+β) + cos (α-β) =

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4 cosαcosβ

2 cosαcosβ

2 sinαsinβ

2 sinαcosβ

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