From 14826b044a5b91482ab18d7fc3c30fc832da88f4 Mon Sep 17 00:00:00 2001 From: bangerth Date: Fri, 8 Sep 2006 21:36:08 +0000 Subject: [PATCH] Fix wrong formula git-svn-id: https://svn.dealii.org/trunk@13868 0785d39b-7218-0410-832d-ea1e28bc413d --- deal.II/examples/step-23/doc/results.dox | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/deal.II/examples/step-23/doc/results.dox b/deal.II/examples/step-23/doc/results.dox index 810f899fd5..5a952d0472 100644 --- a/deal.II/examples/step-23/doc/results.dox +++ b/deal.II/examples/step-23/doc/results.dox @@ -101,7 +101,7 @@ If you want to explore a bit, try out some of the following things: a(x) \nabla u = f, @f] where $\rho(x)$ is the density of the material, and $a(x)$ related to the - stiffness coefficient. The wave speed is then $c=\sqrt{a/\rho}. + stiffness coefficient. The wave speed is then $c=\sqrt{a/\rho}$. To make such a change, we would have to compute the mass and Laplace matrices with a variable coefficient. Fortunately, this isn't too hard: the -- 2.39.5