1. The problem statement, all variables and given/known data I don't understand why the following intergral is improper http://img413.imageshack.us/img413/1667/38410700.jpg [Broken] I have a graph for the function. http://img413.imageshack.us/img413/2424/photoxxs.jpg [Broken] According to this graph, the function should converge in [-∞,0) However, my solution manual says that the function has an infinite interval of integration. Could anyone tell me what I am mistaken? Thank you for reading.