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13 October, 17:53

Use the Intermediate Value Theorem to choose the intervals over which the function, x^4 - 2x^2 - 1, is guaranteed to have a zero. Select all that apply.

a. [-2,-1]

b. [-1,0]

c. [0,1]

d. [1,2]

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Answers (1)
  1. 13 October, 18:02
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    Let f (x) be the given function.

    Answer is a and d, because f (-2) 0; and f (1) 0, so there is a change of sign, signifying that between the limits there is a value of x where f (x) must be 0 (the curve crosses the x axis).
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