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Home Practice Questions AP Calculus AB Differential Equations Question No. 18

18. Of the following, which are solutions to the differential equation \( y'' - 5y' + 4y = 0 \)

  1. \( y = 5\cos(2x) \)
  2. \( y = 2e^x \)
  3. \( y = Ce^{4x} \), where \( C \) is a constant.






Answer is: option4

II and III only

Solution:

II and III only

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