Question # 1

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For any positive integer n

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ABn = Bn A ⇔ AB = BA

ABn = Bn A⇔ A,B are square matrices and AB = BA

ABn = BnA⇔ A + B

ABn = BnA ⇔ A and B are square matries

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(-6,4)

(-3,2)

(6,-4)

(3, -2)

A function whose domain is a subset of natural numbers is called ______

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Identity function

Sequence

Onto function

Series

The equation of the circle with centre (-h, -k) and radius r is

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(x +h)²+ (y+k)²= r²

(x +h)²+ (y-k)²= r²

(x -h)²+ (y+k)²= r²

(x -h)²+ (y-k)²= r²

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Symmetric property

Cancellation property w.r.t. multiplication

Reflexive property

Transitive property

Geometrically the modulus of a complex number represents its distance from the

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Point (1,0)

Point (0,1)

Point (1,1)

Point (0,0)

A point of a solution region where two of its boundary lines intersect, is called

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Boundary

Inequality

Half plane

Vertex

2π is the period of

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sin𝜽

tan𝜽

cot𝜽

all circular function

The number of subsets of B = {1,2,3,4,5}

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10

32

16

5

The value of x, and y, when (x + iy)²= 5 + 4i

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X = 2, y = -1

X = -2, y=1

X = 2, y = -1

X = 2, y = 2

(1, 2) is in the solution of the inequality

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2x + y > 8

2x + y < 6

2x - y > 1

2x + 3y < 2

Power set of X i.e P(X) _______ under the binary operation of union U

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Forms a group

Does not form a group

Has no identity element

Infinite set although X is infinite

Two circle s1: x2+ y2 +2x- 2y- 7= 0: s2: x2+ y2- 6x+ 4y+ 9= 0

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Touch externally

Touch internally

Intersects each other

Do not intersects

The identity element of a set X with respect to intersection in P(x) is

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X

Does not exist

∅

None of these

If cosα= 4/5, then cosα/2

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Which of the following is a vector.

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energy

force

work

power

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360°

180°

90°

None of these

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The difference of two consecutive terms of an A.P. is called ______

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General term

Common ratio

Common difference

None of these

If f(x) = -x²then f(-2) is

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-2

2

-4

4

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none of these

I f the focus is F ( 0,-a) and directrix is the line v=a, then equation of the parabola is:

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x² = 4ay

y² = 4ax

y² = -4ax

x² = 4ax

Arithmetic mean between 14 and 18 is

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16

17

15

32

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range of f

domain of f

both (a) and (b)

none of these

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