Respuesta :

evgeniylevi
Consider this option.
Note,
1. that answer is 
[tex]y=C_1e^x+C_2cos2x+C_3sin2x- \frac{5}{4}x- \frac{5}{4}+ \frac{1}{10}e^{-x}+ \frac{3}{80} cos3x+ \frac{1}{80}sin3x[/tex]
2. if it is possible check the result in other sources.
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