Mechanical Engineering > GATE 2013 SET-1 > Laplace Transforms
The function f(t) satisfies the differential equation d2f/dt2 + f = 0 and the auxiliary conditions, f(0)=0, df/dt(0)=4. The Laplace transform of f(t) is given by
A
2/(s+1)
B
4/(s+1)
C
4/(s2+1)
D
2/(s4+1)

Correct : c

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