simplifications in the ei_solve_impl system, factor out some boilerplate code
diff --git a/doc/snippets/FullPivLU_image.cpp b/doc/snippets/FullPivLU_image.cpp
index d3092e8..817bc1e 100644
--- a/doc/snippets/FullPivLU_image.cpp
+++ b/doc/snippets/FullPivLU_image.cpp
@@ -6,4 +6,4 @@
cout << "Notice that the middle column is the sum of the two others, so the "
<< "columns are linearly dependent." << endl;
cout << "Here is a matrix whose columns have the same span but are linearly independent:"
- << endl << m.lu().image(m) << endl;
+ << endl << m.fullPivLu().image(m) << endl;