Originally Posted by

**jegues** I was confused about that 1 on the RHS of the equation, I wasn't really sure if I had to look at it or not.

If I assume I do,

Is 1 part of $\displaystyle y_{h}$? Yes, it is. $\displaystyle \text{( i.e. }C_{i} = 0, \quad i \neq 1, \quad C_{1} = 1 )$

So by rule 2,

$\displaystyle H \quad \text{(Just a constant)}$

is part of $\displaystyle y_{p}$, but we already have this piece in $\displaystyle y_{h}$ so I shouldn't be including it in $\displaystyle y_{p}$.

Can you see why I get confused when we work with that piece? Hopefully you can clarify my confusion.

**EDIT: Here are the two rules as per my textbook. (See figure attached)**