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Karl
Georg Christian von Staudt describes a method like this
in a paper of 1841. More details can be found in a publication of Felix Klein: ![]() |
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The option is available
if 4/p has been fixed (upper blue axis). Checking the
box will mark certain values of q/p (lower red axis) - q is a multiple of the raster size, and - the roots x1 and x2 are multiples of the raster size. |
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Select the
raster size, or a continuous mode ("Raster off"). A table of p, q, x1, x2 is available by "Data Window". |
![]() Quadratic equation: x2 + px + q = 0 Example: 4/p=2, q/p=4, equivalent p=2, q=-8, roots: x1=-4, x2=2 |