Find the extended operator for the boundary value problem (BVP):
\begin{equation} y''-y=f(x),\qquad ay(0)+y'(0)=0,\qquad y'(1)=a. \end{equation}
Solve the differential equation in the sense of distributions: \begin{equation} xu'=\delta (4x^2-1),\qquad x\in [-1,1],\qquad x(-1)=1,\qquad x(1)=0. \end{equation} Discuss why the
first order differential equation satisfies two boundary conditions.