SumProduct
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Function Description
Returns the sum of the product of two series, i.e. if the
elements of the first array are  and
the elements of the second array are
 and
the elements of the second array are  (for
 (for
 )
then returns
)
then returns  where
 where
 

 
Provided for compatibility with the SUMPRODUCT function in
Microsoft Excel and some other spreadsheet systems.
 
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