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sum
Format: sum( list )
sum(x1, x2, ... )
Arguments: [num] list Input list
(num) x1, x2, ... Input numbers; may include real and
complex numbers
Returns: (num) The numeric sum of all elements in list
if only one argument is supplied or the sum of all arguments if
more than one argument is supplied
Examples: sum([2,3,2,-1]) = 6
sum(2,3,2,-1) = 6
sum([2,3,2+8*I,-1]) = 6+8i
sum(x) = sum of all elements
in the list named x
See Also: sigma, count, prod, avg, std,
variance, max, min,
med
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