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alex41 [277]
3 years ago
13

Find a solution to y″+9y=6sin(3t).

Mathematics
1 answer:
QveST [7]3 years ago
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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