At the bottom of this page it says that ∫sin(sin(x))dx can be represented as an infinite sum.
http://reference.wolfram.com/legacy/v5/TheMathematicaBook/AdvancedMathematicsInMathematica/Calculus/3.5.7.html
This is a forum where we chat about calculus problems that people are wondering about. I would greatly appreciate it if people also help answer some integration problems that have been nagging me for a while. Like ∫sin(sin(x))dx. Thanks Guys.