minimal area
minimum
The graph of f confirms the calculated extremum and shows that it's a minimum.
- Change the value of h and see if it influences the extremum.
- Change the value of r and see of the calculated value still matches the graph.
The area of the cell gets minimal if x = . r.
With this value we can calculate
- the diagonals d and D
- the angles of the rhombusses
- the angles between the rhombusses and the horizontal plane