Integral \[Integral]
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 Integral[f,
x,a,b
]. a and b must appear as a subscript and superscript, respectively.
a
b
x is by default output as
(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. See The Mathematica Book: