Determining Concavity

AP Calculus AB· difficulty 3/5

x

The dashed line marks an inflection point. There, f(x)f''(x):

  • A

    Equals 00 or is undefined

    check_circle
  • B

    Equals f(x)f'(x)

  • C

    Is negative

  • D

    Is positive

Explanation

At inflection points, ff'' changes sign and is either 0 or undefined.

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