Algebra of Complex Numbers

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  • Q1

    For every complex number, the multiplicative identity is

    Marks:1
    Answer:

    1.

    Explanation:
    We  have, 1+i0 = 1 and z.1=1.z = z for every complex number z. So, 1 is called the multiplicative identity.
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  • Q2

    Find the multiplicative inverse of 5 + 3i.

    Marks:1
    Answer:

    Explanation:

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  • Q3

    Write the multiplicative inverse of i.

    Marks:1
    Answer:

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  • Q4

    Marks:4
    Answer:

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  • Q5

    Write the additive inverse of -3+4i.

    Marks:1
    Answer:

    The additive inverse of -3+4i is 3-4i.

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