I'm really trying to. It's pretty complex for a beginner it seems (or so I think). I'll try and work some others out as the days come and post them on here for confirmation. Right now I understand about 30% of this. I'm trying though.
If you're a beginner to integration and you've been asked for an approximate value of a complicated integral (complicated by beginner standards), just shoot it (this is a metaphor for use whatever technology you have at hand ......)
How much of a beginner are you?