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Exam Questions Papers - Engineering

Q1:

Which of the following is a solution to the differential equation ?

A x(t) = 3e-t

B x(t) = 2e-3t

C

D x(t) = 3t2

ANS:B - x(t) = 2e-3t

log x(t) = 3t x(t) = K.e-3t Thus option (B) satisfies the solution.