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Implicit Differentiation

AP Calculus AB· difficulty 3/5

x (5, 0)

The tangent line to x2+y2=25x^2 + y^2 = 25 at the point (5,0)(5, 0) is:

  • A

    Vertical

    check_circle
  • B

    Slope -1

  • C

    Slope 1

  • D

    Horizontal

Explanation

At (5,0)(5, 0), y′=−x/yy' = -x/y is undefined, indicating a vertical tangent.

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