Prof.P.B.Sunil Kumar, Department of Physics, IIT Madras explained the concept of Adaptive step size Runge Kutta scheme in Numerical Analysis and Computer Programing. Feel free to share your ideas and ask your doubts here... [video=youtube;osHgLsObORA]http://www.youtube.com/watch?v=osHgLsObORA&feature=bf_next&list=PLCA944605A8EDE42A&index=33[/video]