diff --git a/testing_project/test_logistic.py b/testing_project/test_logistic.py
index 100d824..7dc29c8 100644
--- a/testing_project/test_logistic.py
+++ b/testing_project/test_logistic.py
@@ -19,6 +19,15 @@ def test_f_corner_cases():
 # x=0.2, r=3.4 => f(x, r)=0.544
 # x=0.5, r=2   => f(x, r)=0.5
 
+def test_f_normal_cases():
+    cases = [
+        (.1, 2.2, .198),
+        (.2, 3.4, .544),
+        (.5, 2, .5),
+    ]
+    for x, r, expected in cases:
+        result = f(x, r)
+        assert_allclose(result, expected)
 
 # Hands on 2:
 # parametrize the above test using @pytest.mark.parametrize