Mark the correct alternative in each of the following:

Which of the following differential equations has y = C1 ex + C2 e–x as the general solution?


Solving for (A)





For general solution put (D2 + 1) = 0




General solution, y = C1 cos x + C2 sin x


Solving for (B)






For general solution put (D2 – 12) = 0




General solution, y = C1 ex + C2 e-x = (B) which is required solution.

1