| Author |
Comment/Response |
Steve
|
 02/27/13 2:53pm
Replace the dot between a and Sin and a and Cos with a space or a star:
In[1]:= Simplify[a.Cos[x]^2 + a.Sin[x]^2]
Out[1]= a.sin^2(x)+a.cos^2(x)
In[2]:= Simplify[a Cos[x]^2 + a Sin[x]^2]
Out[2]= a
In[3]:= Simplify[a*Cos[x]^2 + a*Sin[x]^2]
Out[3]= a
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