Question # 1

If z = x + i y = r (cos Θ + i sin Θ), then arg z is:

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tan Θ

cos²Θ + sin²Θ

r

Θ

Rational numbers are:

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repeating decimals

terminatingdecimals

periodicdecimals

all of these

Every real number is also a/an:

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integer

rational number

irrationalnumber

complexnumber

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archimedean property

transitive property

multiplicative property

i² + 1 =

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-1

0

i

1

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closureproperty

associativeproperty

commutativeproperty

trichotomyproperty

Zero is:

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a natural number

a whole number

a positive integer

a negativeinteger

The real part of the complex number a + bi is:

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b

-b

a

-a

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i

0

Conjugate of a + i b is:

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-a + ib

a + ib

-a - ib

a - ib

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Additive property

Multiplicativeproperty

Reflexiveproperty

Transitive property

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Reflexive property

Symmetricproperty

Transitiveproperty

Trichotomyproperty

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cancellation property w.r.t multiplication

cancellationproperty w.r.t addition

multiplicativeproperty

additiveproperty

The multiplicative invers of a non-zero real number a is:

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0

-a

a

The set of all rational numbers between 2, 3 is:

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an empty set

an infinite set

a finite set

a power set

Product of a complex number and its conjugate is:

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a real number

irrationalnumber

a complexnumber

either real number or complexnumber

Conjugate of complex number (-a, -b) is:

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(-a, b)

(-a, -b)

(a, -b)

none of these

The imaginary part of the complex number a + bi is:

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a

b

bi

none of these

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closure property w.r.t multiplication

commutativeproperty w.r.t multiplication

associativeproperty w.r.t multiplication

trichotomy property

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