The Question: $$\varepsilon y''+f(x)y'+y=0 \qquad y(-1)=0 \qquad y(1)=1$$ where $0<\varepsilon \ll 1$ and $f$ is a given smooth function that is strictly positive with $f(1)=f(-1)=1$. (i) Determine the location of the boundary layer (ii) Obtain leading order outer and inner solutions My At...