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diff --git a/js/src/tests/test262/ch12/12.9/S12.9_A4.js b/js/src/tests/test262/ch12/12.9/S12.9_A4.js
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+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * The production ReturnStatement : return Expression; is evaluated as:
+ * i)   Evaluate Expression.
+ * ii)  Call GetValue(Result(2)).
+ * iii) Return (return, Result(3), empty)
+ *
+ * @path ch12/12.9/S12.9_A4.js
+ * @description Return very sophisticated expression and function
+ */
+
+// second derivative 
+function DD_operator(f, delta){return function(x){return (f(x+delta)-2*f(x)+f(x-delta))/(delta*delta)};}
+
+DDsin = DD_operator(Math.sin, 0.00001);
+
+
+//////////////////////////////////////////////////////////////////////////////
+//CHECK#1
+// ((sin(x))')' = -sin(x)
+if (DDsin( Math.PI/2 ) + Math.sin( Math.PI/2 ) > 0.00001) {
+	$ERROR('#1: return Expression yields to Return (return, GetValue(Evaluate Expression), empty)');
+}
+//
+//////////////////////////////////////////////////////////////////////////////
+