--- loncom/html/adm/help/tex/Formula_Response_Sampling.tex 2002/07/05 16:12:31 1.1
+++ loncom/html/adm/help/tex/Formula_Response_Sampling.tex 2002/07/18 15:52:27 1.2
@@ -1,3 +1,4 @@
+\label{Formula_Response_Sampling}
As you may know, it is extremely difficult to determine whether a given expression
is exactly equal to another expression in general. For example, is $\sin 2x=2\sin x\cos x$?