Question: y + y = 3 cos 2 x , y 1 = cosx - Cos 2 x , y 2 = sinx - cos

" +

= 3

cos

2

,

1 =

cosx

-

Cos

2

,

2 =

sinx

-

cos

2

xVerify by substituion that each given function is a solution of the given differential equation. Throughout these problems, primes denote derivative with respect to x

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