Integral using sets
<math xmlns="http://www.w3.org/1998/Math/MathML"> <apply> <csymbol cd="calculus1">defint</csymbol> <apply> <csymbol cd="set1">suchthat</csymbol> <ci>R</ci> <bind> <csymbol cd="fns1">lambda</csymbol> <bvar> <ci>x</ci> </bvar> <apply> <csymbol cd="set1">in</csymbol> <ci>x</ci> <semantics> <ci>D</ci> <annotation-xml cd="mathmltypes" name="type" encoding="MathML-Content"> <ci>set</ci> </annotation-xml> </semantics> </apply> </bind> </apply> <bind> <csymbol cd="fns1">lambda</csymbol> <bvar> <ci>x</ci> </bvar> <apply> <semantics> <ci>f</ci> <annotation-xml cd="mathmltypes" name="type" encoding="MathML-Content"> <ci>fn</ci> </annotation-xml> </semantics> <ci>x</ci> </apply> </bind> </apply> </math>