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Volumes by Disk and Washer Methods

AP Calculus AB· difficulty 2/5

r=f(x)

For revolution about the xx-axis, the radius of the disk at location xx is

  • A

    f(x)f(x)

    check_circle
  • B

    x2x^2

  • C

    xx

  • D

    f′(x)f'(x)

Explanation

Distance from axis to curve at xx is f(x)f(x).

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