Question # 1

If u = xi + yj, then|u|

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x² + y²

(x² +y²)²

x²-y²

√(x²+y²)

∀x, y ∈ R, either x = y or x > y or x < y is

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Transitive property

Reflexive property

Trichotomy property

None of these

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If the roots of ax²+ bx + c = 0 (a > 0) be greater than unity, then

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a + b + c = 0

a + b + c > 0

a + b + c < 0

None of these

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The point which is closet to the focus of a parabola is:

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vertex

Chord

Focus

Directix

The domain of the principle cos function is

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-2x³

2x^-3

-2x^-3

2x³

The Principal value of sin-1 (-1/1/2)

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π/2

-π/2

π

-π

The sample space for tossing a coin once is

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{T, T}

{H, H}

{H, T}

None of these

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A^-

A^t

-A

A

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