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Derivative Rules: Sum, Difference, Constant Multiple

AP Calculus AB· difficulty 1/5

If f(x)=5x4f(x) = 5x^4, then f′(x)=f'(x) =

  • A

    20x320x^3

    check_circle
  • B

    20x420x^4

  • C

    x4/5x^4/5

  • D

    5x35x^3

Explanation

5⋅4x3=20x35 \cdot 4 x^3 = 20 x^3.

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