Question # 1

The real part of the complex number a + bi is:

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b

-b

a

-a

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3×1

1×3

3×3

1×1

(1 - cos²Θ) (1 + cot²Θ) =

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tan²Θ

0

1

-1

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The period of sin 2x is:

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π

2π

3π

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quad I

quad. II

quad. III

quad. IV

Which number cannot be a term of a geometric sequence ?

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0

1

-1

r

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2

4

6

8

The amplitude and period of 3 sin x are:

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3, π

2, 2π

3, 3π

3, 2π

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Conjugate of a- i b is:

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b + ia

-a + ib

-a - ib

a + ib

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3

-3

1/3

-1/3

If α, ß are the roots of x² + kx + 12=0 such that α-ß = 1 then K = :

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0

±5

±7

±15

If A is a square matrix, then A - A^t is:

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If A is a square matrix, then:

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|A^t| = A

|A^t| = -A

|A^t| = |A|

A^t= A

If the Discriminant of a quadratic equation is a perfect square, then roots are:

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real and equal

complex

rational

irrational

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If the sum of the roots of the equation kx² - 2x + 2k = 0 is equal to their product, then the value of k is:

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1

2

3

4

The set of all rational numbers between 2, 3 is:

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an empty set

an infinite set

a finite set

a power set

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