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Need help for calculus: Check that the function y=x^2 -cos x is a solution of the second order ODE of 2y''+y-sin x=y'+(x-2)^2+2x+cosx?

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  • Need help for calculus: Check that the function y=x^2 -cos x is a solution of the second order ODE of 2y''+y-sin x=y'+(x-2)^2+2x+cosx?


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