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Please answer this:1+5 =

Original Message (ID '370775') By Bill Simpson:
Using * instead of . In[1]:= Simplify[a*Cos[x]^2+a*Sin[x]^2] Out[1]= a Can you reproduce this? Unless . was some other character that was corrupted by cut and paste, . is used by Mathematica for the Dot product of matricies, not for multiplication of scalar variables, at least in the American english version and perhaps others.