From 6db52d799a9382fe3065cd92aa7e75ef7b44dedf Mon Sep 17 00:00:00 2001
From: Ksero <Ksero@users.noreply.github.com>
Date: Fri, 28 Oct 2016 15:29:18 +0200
Subject: [PATCH] Fix multivariate Runge-Kutta ODE solver typo

The multiplication by the time-step was missing in this method (but not the others)
---
 src/Numerics/OdeSolvers/RungeKutta.cs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/Numerics/OdeSolvers/RungeKutta.cs b/src/Numerics/OdeSolvers/RungeKutta.cs
index bbf82490..77a65d71 100644
--- a/src/Numerics/OdeSolvers/RungeKutta.cs
+++ b/src/Numerics/OdeSolvers/RungeKutta.cs
@@ -117,7 +117,7 @@ namespace MathNet.Numerics.OdeSolvers
             {
                 k1 = f(t, y0);
                 k2 = f(t, y0 + k1 + dt);
-                y[i] = y0 + 0.5 * (k1 + k2);
+                y[i] = y0 + dt * 0.5 * (k1 + k2);
                 t += dt;
                 y0 = y[i];
             }
@@ -153,4 +153,4 @@ namespace MathNet.Numerics.OdeSolvers
             return y;
         }
     }
-}
\ No newline at end of file
+}