# Operator + orthogonality

1. Dec 9, 2008

### dirk_mec1

1. The problem statement, all variables and given/known data

2. Relevant equations

3. The attempt at a solution
I know that C[a,b] is dense in L2[a,b] thus the equation holds also for f,g in L2.

I'm stuck at the last step towards the J*. Can someone give me a hint?