Question # 1

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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If a,b,c are three non-coplanar vector then [a +b,b +c,c +a] = _____

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[a.b.c]

2[a,b,c]

[abc]-2

2[abc]2

cos^-1(cos x) =

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x

cos x

x = 1/x

cos^-2 x

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Which of the following function form 1 to itself are bi-jective

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F(x) = x + 3

F(x) = x⁵

F(x) = 3x + 2

F(x) = x²+ x

{x : xε Z and x < 1} is

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Singleton set

A set with two points

Empty set

None of these

1,1/3,1/5,1/7,1/9..... is a

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geometric sequence

finite sequence

infinite sequence

arithmetic series

In the function f: A⟶B, the elements of a are called

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Images

Pre-images

ranges

Parameters

If f(α) = b2 and g (c) =d where c=b2 then (gof)(a) is

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α

c

b

d

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-1

0

1

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