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28 March, 21:58

Which function is an odd function?

(A) f (x) = 0.8x^3

(B) f (x) = 5x^2

(C) f (x) = 0.7x^2 + 3

(D) f (x) = 3x - 1

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Answers (1)
  1. 28 March, 22:13
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    A function is odd if:

    f ( - x) = - f (x)

    A) f ( - x) = 0.8 ( - x) ^3 = - 0.8 x^3 = - f (x)

    Answer: A) f (x) = 0.8 x^3 is an odd function.

    Functions B) and C) are even and D) is neither even nor odd.
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