Emmanuel_Euler Messages 142 Reaction score 11 Thread starter Apr 17, 2015 #1 what is the integral of e^-(x/2) * sin(a*x) dx??
berkeman Admin Messages 69,781 Reaction score 25,629 Apr 17, 2015 #2 This looks enough like a schoolwork question that it needs to be re-posted in the Homework Help, Calculus & Beyond forum, and you need to show your efforts at working toward a solution.
This looks enough like a schoolwork question that it needs to be re-posted in the Homework Help, Calculus & Beyond forum, and you need to show your efforts at working toward a solution.
HallsofIvy Science Advisor Homework Helper Messages 42,895 Reaction score 983 Apr 17, 2015 #3 Do an "integration by parts" twice. Start by letting [itex]u= e^{-x/2}[/itex] and [itex]dv= sin(ax)dx[/itex]
Do an "integration by parts" twice. Start by letting [itex]u= e^{-x/2}[/itex] and [itex]dv= sin(ax)dx[/itex]