[R] Writing Complex Formulas

warmstron1 armstrong.wou at gmail.com
Thu Jul 14 18:46:18 CEST 2011

I resolved this issue.  It appears that "^" won't work for this case, but
"**" worked.  I can't find any reference to this, but where "^" seems to be
used to raise a value to a numerical function, "**" is used for a y raised
to the power of x where x it a computation.   

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