Question # 1

Roots of the equation 2x²- 7x + 3 = 0 are

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Rational

Irrational

Complex

None of these

cos2a=______;

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cos2 a-sin2 a

2cos2 a-1

1-2 sin2 a

All of these

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2

4

6

8

If f(x) = -x²then f(-2) is

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-2

2

-4

4

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0

1

2

3

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none of these

The set R is ........w.r.t subtraction

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Not a group

A group

No conclusion drawn

Non commutative group

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3/4

-3/4

4/3

-4/3

If the roots of ax2 + b =0 are real and distinct then

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ab > 0

a = 0

ab < 0

a > 0,b > 0

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cosec x + c

-cosec x + c

-sec x + c

sec x + c

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