I am rather new to Mathematica (v8) and encountered a strange behavior today. After applying FullSimplify to an expression (that should be real valued), I get the following result:
"(0. + 0. i) + some real valued terms here"
I am wondering why Mathematica does not simply remove the first term? On another occasion, after applying FullSimplify Mathematica leaves me with sth. like:
"i(3i + some more terms with zero real and non-zero imaginary part)"
Why is this not being simplified? I guess I am missing something here.