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Functions : Algebra Practice Questions

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Functions question could range from very easy questions to medium level difficulty questions in XAT. Concept tested includes finding value of an unknown, determining the domain, codomain and range of functions, determining whether the given function is odd, even or neither odd nor ever. Concepts including whether a function is an invertible function, into function, onto function are also occasionally tested.

  1. If f(x2 – 1) = x4 – 7x2 + k1 and f(x3 – 2) = x6 – 9x3 + k2 then the value of (k2 – k1) is _____

    1. 6
    2. 7
    3. 8
    4. 9
    5. None of the above
  2. If f(2, 7) = 57 and f(1, 6) = 37, what is the value of f(3, 10)?

    1. 107
    2. 127
    3. 147
    4. None of these
  3. Which of the following is not an odd function?

    1. f(x) = -x3
    2. f(x) = x5
    3. f(x) = x2 - x
    4. f(x) = |x|3

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