# Answer to Question #9018 in Differential Equations for noorah

Question #9018

Solve differential equation :-

1- Y^4 +9 y″ =(x^2 +1 )sin3x

2- y″ +4 y = sin^2 x

1- Y^4 +9 y″ =(x^2 +1 )sin3x

2- y″ +4 y = sin^2 x

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