+ _ _ _ PLUSSIGN _ _ _ _ _ _ _ _ _ _ _ _ operator

The + operator is a prefix or infix n-ary addition operator.

syntax:

or +(<expression> {,<expression>}+)

<expression> may be any valid REDUCE expression.

examples:

x**4 + 4*x**2 + 17*x + 1; 

   4      2
  X  + 4*X  + 17*X + 1 


14 + 15 + x; 

  X + 29 


+(1,2,3,4,5); 

  15

+is also valid as an addition operator for matrix variables that are of the same dimensions and for equations.