So you calculate for zero online
- The "math guru" you need to just only the function type and then get the complete curve display discussion.
- At point D, you can find the zero and the cut axes of the points with the coordinates.
- Alternatively, you can get on www.thkoehler.de a comprehensive curve discussion velvet zero.

Zero point of charge
Also on the iPad, you can calculate zero points. How and with which App that works, read here.
