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\[Integral]

  • Unicode: 222B.
  • Alias: int.
  • Compound operator with built‐in evaluation rules.
  • f x is by default interpreted as Integrate[f,x].
  • f x is by default interpreted as Integrate[f,{x,a,b}]. a and b must appear as a subscript and superscript, respectively.
  • is by default interpreted as Integrate[f,x∈reg], where the region is entered as an underscript.
  • Parentheses should be used in (a b) x whenever is an operator with a precedence lower than .
  • Note the use of , entered as dd or \[DifferentialD], rather than ordinary d.