Dear all,

I just tried to modify step-3 to 1D. The changes are minor.

The equation is changed to be with a small reaction.

The mesh is generated with subdivided_hyper_cube (triangulation, 50, 0, 
10); I changed all the <2>, the dimension, to <1>.

When running the program, the solution is zero on the left side as 
expected. However, the right side solution is something nonzero. Since I am 
using the same apply_boundary_condition settings, I am supposed to get zero 
solution on both boundaries, right? Am I missing something?

Thanks in advance.

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