Roots of a Complex Number

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  • Q1

    The position of middle term in the expansion of (1 + x)20 is

    Marks:1
    Answer:

    11th term.

    Explanation:

    Total number of terms = 20+1 =21

    Middle term = (21+1)/2 = 11th term

     

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  • Q2

     (-1)(8n+3)/2 , where n is a positive integer, is equal to

    Marks:1
    Answer:

    -i.

    Explanation:
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  • Q3

    Marks:1
    Answer:

    1.

    Explanation:

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  • Q4

    Marks:1
    Answer:

    1.

    Explanation:
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