Question # 1

What is the conjugate of -7 -2i ?

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-7 + 2i

7 + 2i

7-2i

√53

The nth term in G.P 3,-6,12,............ is

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25, 20

20, 10

20, 5

15, 10

If α and β be irrational roots of a quadratic equation, then

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α = b/a and β = ca

α = a/b and β = -c/a

α² + β² = 1

α = -b/a and β= c/a

Which is an explicit function

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y = x² +2x -1

x² +xy +y² =2

xy² -y +9/xy =1

All are

The axis of the parabola y² = 4ax is

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x =0

Y =0

X = y

X = -y

Which is not included in the domain of Cos^-1 x

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0

1

-1

2

If x < y, 2x = A and 2y = B then

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A =B

A < B

A< X

B < y

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

1/x² -1 = ? (in case of making partial fraction)

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Ax +B/x² -1

A/x + B/ x- 1

A/ x+1 + B/x-1

None

Which is in the solution set of 4x - 3y <2

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(3,0)

(4,1)

(1,3)

None

If Cosα = 3/5, Cosβ = 5/13, then

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Cos(α +β) =33/65

Sin(α +β) =56/65

sin²(α +β/2) =1/65

Cos(α +β) =63/65

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