@tomleslie 

Hello again;

 I checked again and you are definetly right: For some reason MAple ignores the imaginary if it is very small. However for this type of calculation I need the imaginary. I could overcome this by changing the phasor domain to time domain and it was ok. Without your help I wouldn't be able to see this. Thanks a lot for the insight.

regards;

KB

@tomleslie Thats a great observation! Thank you again for the great work! I will check it and write you!

Thank you very much!

KB

@tomleslie 

Thanks for the reply!

However, after changing all j witk, I, including the vector J with K (a random letter nothing special), I still have the same problem...

KN