3 years ago

Find a solution to y″+9y=6sin(3t).

1 answer:

3 0

<span>y" + 9y = 0
m^2 + 9 = 0
m = ± 3i

yH = C1 cos 3t + C2 sin 3t

yP = C3 t sin 3t + C4 t cos 3t
hope this helps </span>

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