\iint - LaTeX Symbol

\iint

\iint

The double integral symbol, used to represent the integration of a function over a two-dimensional region.

Examples

\iint_{R} f (x, y) d x d y

Double integral of function f over region R.

\iint_R f(x, y) \, dx \, dy

\iint_{0}^{1} \iint_{0}^{1} (x^{2} + y^{2}) d x d y

Double integral of x^2 + y^2 over the unit square.

\iint_{0}^{1} \iint_{0}^{1} (x^2 + y^2) \, dx \, dy

\iint_{D} (x + y) d A

Double integral of x + y over domain D with area element dA.

\iint_D (x + y) \, dA