Hi, Preben! 

Thanks alot! It is greatly appreciated. I've found no problems programming Euler's with your corrections, except for the actual appearance of the plot. I was expecting a sine-wave as solution to the differential equation, however, with the plot commands and the functions that I put in the plot, I receive something of a parabolic shape. 

Have you tried plotting it - and if so: what type of graphic result do you get? 

Thanks a bundle! 

Emil Frank

Hi, Preben! 

Thanks alot! It is greatly appreciated. I've found no problems programming Euler's with your corrections, except for the actual appearance of the plot. I was expecting a sine-wave as solution to the differential equation, however, with the plot commands and the functions that I put in the plot, I receive something of a parabolic shape. 

Have you tried plotting it - and if so: what type of graphic result do you get? 

Thanks a bundle! 

Emil Frank