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Day 166: NDA Maths

5 questions. Try each one first, then open its answer.

  1. Question 1

    Vectors. Asked once: NDA 1 2017 (same type asked 2 times)

    68
    ABCDABCD is a quadrilateral whose diagonals are ACAC and BDBD. Which one of the following is correct?

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  2. Question 2

    Application of Derivatives. Asked once: NDA 1 2017 (same type asked 2 times)

    84
    What is the maximum value of the function f(x)=4sin⁡2x+1f(x)=4\sin^2 x+1?

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  3. Question 3

    Functions. Asked once: NDA 2 2017 (same type asked 2 times)

    78
    If xx is any real number, then x21+x4\dfrac{x^2}{1+x^4} belongs to which one of the following intervals?

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  4. Question 4

    Sequence & Series. Asked once: NDA 1 2017 (same type asked 2 times)

    21
    The sum of all the two-digit odd numbers is

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  5. Question 5

    Complex Numbers. Asked once: NDA 1 2017 (same type asked 2 times)

    13
    If ∣z+4∣≤3|z+4| \leq 3, then the maximum value of ∣z+1∣|z+1| is

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