Question # 1

If Z₁= 1 + i, Z₂= 2+3i, then |Z₂- Z₁| = ?

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A monoid (G, *) is said to be group if

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have identity element

is commutative

have inverse of each element

None of these

If x < y, 2x = A, and 2y = B, then

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A = B

A < B

A < x

B < y

What is the period of cos 6x =?

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π/2

π/3

π/4

π

A function from X to X is denoted as

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f : X to Y

f : Y to Y

x = _________ is in the solution of 2x + 3 < 0

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0

2

-1

-2

A square matrix A = [aij] is upper triangular when

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cij = 0

bij = 0

aij = 0 for all i > j

dij = 0

If A and B are two sets then any subset R of A x B is called

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relation on A

relation on B

relation from A to B

relation from B to A

The value of x which is unchanged by the mapping in the function defined by f ; x⟶ x² + 5x -5 for x> 0 is

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1

5

-5

-1

The integral of 3x⁵dx is:

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15 x⁴

x⁶/2

1/6x⁵

x⁵/ln3

A relation in which the equality is true only for some values of the unknown is called

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An identity

An equation

A polynomial

None

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5 / 12

3 / 8

5 / 8

7 / 4

The third term of the sequence a_n= (-1)^n-1(n-7) is ______

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8

4

-4

8

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0

1

-1

2

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Corner point of the system x - y≤ 2,x + y≤ 4,2x -y≤ 6,x≥ 0,y≥ 0

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(1,4)

(4,2)

(3,1)

(4,1)

Multiplicative inverse of 0 is

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0

1

+-1

Does not exist

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If ab > 0 and a < 0, which of the following is negative?

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b

-b

-a

(a - b)²

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x^-2+ c

not possible

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6! = ______

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360

720

6.5.4

None of these

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5

10

20

30

If c = 2i+j+k and d= -1 + 4j +2k, then [c-d]=

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√7

√41

√19

√(2&7)

The law of consines is

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The distance of the point (-2, -3) from the origin is

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2

-5

-3

The complement of set A relative to universal set U is the set

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The law of sines

The law of tangents

The pythagorus theorem

None of these

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Always negative

Zero

Always positive

Infinity

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