This is documentation for Mathematica 5, which was
based on an earlier version of the Wolfram Language.

 Product Product[f, i, imax] evaluates the product . Product[f, i, imin, imax] starts with i = imin. Product[f, i, imin, imax, di] uses steps di. Product[f, i, imin, imax, j, jmin, jmax, ... ] evaluates the multiple product . Product[f, i, imax] can be entered as . can be entered as prod or \[Product]. Product[f, i, imin, imax] can be entered as . The limits should be underscripts and overscripts of in normal input, and subscripts and superscripts when embedded in other text. Product evaluates its arguments in a non-standard way (see Section A.4.2). Product uses the standard Mathematica iteration specification. The iteration variable i is treated as local. In multiple products, the range of the outermost variable is given first. The limits of a product need not be numbers. They can be Infinity or symbolic expressions. If a product cannot be carried out explicitly by multiplying a finite number of terms, Product will attempt to find a symbolic result. In this case, f is first evaluated symbolically. Product can do essentially all products that are given in standard books of tables. Product is output in StandardForm using . See Section 1.5.4. Implementation Notes: see Section A.9.5. See also: Do, Sum, Table, NProduct, RSolve. New in Version 1; modified in 3.