Write the order of the differential equation whose solution is `y=acosx+b s in\ x+c e^(-x)dot`

Explanation

To find the order of the differential equation whose solution is given by \( y = a \cos x + b \sin x + c e^{-x} \), we will follow these steps:

### Step 1: Identify the form of the solution
The given solution is:
\[ y = a \cos x + b \sin x + c e^{-x} \]
where \( a \), \( b \), and \( c \) are constants.
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