From 1d2bcd60d3e0cb8649ba5d2ae8672457849656ce Mon Sep 17 00:00:00 2001
From: Tavian Barnes <tavianator@gmail.com>
Date: Fri, 10 Jun 2011 01:21:32 -0600
Subject: Make the test DE care about x.

---
 tests/CK45.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'tests/CK45.cpp')

diff --git a/tests/CK45.cpp b/tests/CK45.cpp
index 0d95f67..7d2d390 100644
--- a/tests/CK45.cpp
+++ b/tests/CK45.cpp
@@ -23,11 +23,11 @@
 #include <iostream>
 #include <iomanip>
 
-// y' = y (y == C*exp(x))
+// y' = x*y (y == C*exp(x^2/2))
 double
 f(double x, double y)
 {
-  return y;
+  return x*y;
 }
 
 int
-- 
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