Question # 1

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2x cos x2

2sinxcosx

- sin x2

2x sin x2

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a = 2, b = 3

a = 3, b = 2

a = 2, b = 1, 2

a = 3, b = 3

If sin x + sin²x = 1, then the value of Cos¹²x + 3cos¹⁰x + 3cos⁸x + cos⁶x + 2 cos⁴x + cos²x-2 is equal to

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0

1

2

sin²x

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x³⁹

40x³⁹

40x⁴¹

none of these

The sum of the focal distance from any point on the ellipse 9x2 +16y2 =144 is

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32

16

18

8

∀ z ∈ C, multipliucative is

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(1,1)

(1,0)

(0,1)

None of these

The no of term is the expansion of (a+x)n-1 is

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n+1

n-1

n

n-2

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none of these

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If a plane passes through the vertex of a cone then the intersection is

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an ellipse

a hyperbola

a point circle

a parabola

The set (Q, .)

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Forms a group

Does not form a group

Contains no additive identity

Contains no additive inverse

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