Question # 1

If the roots of x²+ ax + b = 0 are non-real, then for all real x, x²+ ax + b is

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Negative

Positive

Zero

Nothing can be said

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Conclusion

Implication

Antecedent

Hypothesis

Domain of tan x is ______

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30°

45°

60°

75°

Which one is a pair of allied angles

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(180° -θ)

(180° -θ,180° +θ)

(180° +θ)

None of these

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15

9

7

8

sin^-1 x =

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tan^-1 x

Cosec^-1 x

Cosec x

cosec^-1(1/x)

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Tan (π + Tan^-1 x) =?

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Tan x

X

-x

Cot^-1 x

Cos^-1 x =

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∏ = sin^-1 x

∏ + sin^-1 x

∏/2 - sin^-1 x

∏/2 +sin^-1 x

A function F(x) is called even if

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F(x) = F(-x)

F(x) = -F(x)

2F(x) = 0

If any two rows (or any two columns) of a square matrix are inter changed, the determinant of the resultant matrix is

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True

False

Fallacious

Some times true

What is the domain of y= Sin^-1 x?

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-1 ≤ x ≤1

1 ≤ x ≤ 1

0 ≤ x ≤ π

-π/2 ≤ x ≤ π/2

The end points of the major axis of the ellipse are called its

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foci

Vertices

Co-vertices

eccentricity

If sinθ = 1 then θ =

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2nπ +π/2

2nπ

2π +n

Nπ +π/2

The value of Cos (1/2 Cos^-1 1/2) is equal to

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√3/2

-3/4

1/16

1/4

Two dice are rolled The number of possible out come in which at least one die shows 2 is?

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5

12

11

7

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

If f (x) = x/x²- 4 then which is not included in the domain of f(x)

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0

-2

1

4

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