Problem: Find a uniformly valid approximation to the solution of $ \epsilon y'' + y' \sin(x) + y \sin(\2x) = 0$ with boundary conditions $ y(0) = \pi, y(\pi) = 0 $ in the limit $\epsilon = 0$ from the positive direction. Use only the variables and constants given in the problem; do not define additional constants. Place your final solution in a $\boxed{}$ LaTeX environment.
Solution: $ \boxed{y = \text{erfc}(\frac{x}{\sqrt{2\epsilon}})} $