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Total

Total[list]
gives the total of the elements in list.
Total[list, n]
totals all elements down to level n.
Total[list, {n}]
totals elements at level n.
Total[list, {n1, n2}]
totals elements at levels n1 through n2.
  • For a 2D array or matrix:  »
Total[list] or Total[list, {1}] totals for each column
Total[list, {2}] totals for each row
Total[list, 2] overall total of all elements
  • Total[f[e1, e2, ...]] gives the sum of the ei for any head f.  »
  • Total[list, Method->"CompensatedSummation"] uses compensated summation to reduce numerical error in the result.  »
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