Delhi University MCA Complex Numbers Previous Year Question Paper and Solution with PDF

Delhi University MCA Complex Numbers Previous Year Questions (PYQs)

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Previous Year Questions

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Previous Year Questions
Delhi University MCA

Qus : 1

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Qus : 2

Let

z = \cos (\frac{2 π}{7}) + i \sin (\frac{2 π}{7})

. Then the principal argument of

\overset{―}{(1 - z^{2}})

is equal to

Video Solution Discussion

Qus : 3

The complex number

is the root of the quadratic equation with real coefficients

Video Solution Discussion

Qus : 4

Video Solution Discussion

Qus : 5

Let

R e (z)

and

I m (z)

be the real and imaginary parts of any complex number

z

, and

\arg (z)

denotes the principal argument of

z

. Let

z_{1}

and

z_{2}

be two distinct complex numbers such that

Re (z_{1}) = | z_{1} - 2 | and Re (z_{2}) = | z_{2} - 2 | .

\arg (z_{1} - z_{2}) = \frac{π}{6},

then

(a)

Im (z_{1} + z_{2}) = 4 \sqrt{3}

(b)

Im (z_{1} + z_{2}) = \frac{4}{\sqrt{3}}

(c)

Re (z_{1} - z_{2}) = 8

(d)

Re (z_{1} - z_{2}) = 9

Video Solution Discussion

Qus : 6

Video Solution Discussion

Qus : 7

Video Solution Discussion

Qus : 8

Video Solution Discussion

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Delhi University MCA Complex Numbers Previous Year Questions (PYQs)

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