Question # 1

The total cost of 2 apples and 3 oranges is $1.70, which of the following is true

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The cost of one apple

The cost of one orange

Both have equal cost per item

Cost of each single item can not be determined

What is the period of sin 2x/3 cos 4x=?

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π

2π

π/2

π/3

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1

2

3

None of these

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If cos 20°=K and cos x=2 k²-1, then the possible values of x between 0° and 360° are

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140°

50° and 140°

50° and 130°

40° and 320°

For the parabola the line through focus and perpendicular to the directrix is called

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Tangent

Vertex

Axis

None

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are real no

both are not real

are imaginary no

both are imaginary

The vertex of the graph of the quadratic function f(x) = x2 -10, is

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(0 , -10)

(-10,0)

(10,0)

(0,10)

sin (α+β) - sin (α -β) =

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4 cosαsinβ

2 cosαsinβ

4 cosαcosβ

4 sin αsinβ

The function sine and Cosine have the closed internal as their range

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[1, 0]

[-1, 1]

[0, 1]

[-1, 2]

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The locus of the point of intersection of tangents to an ellipse at two points, sum of whose eccentric angles is constant is

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A parabola

A circle

An ellipse

A st. line

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6

20

0

The graph of the quadratic equation is

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Straight line

Circle

Parabola

elipse

Which one is quadrantal angle

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8181710°

2345°

-8181180°

-2344°

A prime number can be a factor of a square only if it occurs in the square at least

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Once

Thirce

Twice

None of these

The distance of the point (1.1) from the origin is

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0

2

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A

A'

U

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What is the value of cos-1(1/2)?

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π/3

π/4

3π/2

π/6

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k3

0

3k

k6

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0

1

Sec^-1x =

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Cos^-11/x

cosec^-11/x

Cos^-1(-x)

Tan^-1x

√2 +√3 +√5) = (√2 +√3 +√5: this property is called

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associative property w.r.t addition

commutative property

Closure property w.r.t addition

Additive identity

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0

1

undefined

Ifα,β are non-real roots of ax2 + bx +c =0 (a,b,c∈ Q),then

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α = β

αβ = 1

α = β

α = 1

For three consecutive terms in A.P middle term is called

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A.M

nth term

Central term

None of these

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If f(x) = x²-x then f(0) is

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0

1

2

3

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