Mathematical workbench
Square laboratory
Control an arbitrary square through E, x, and y, or obtain these coordinates from a parametric family.
E5x3y1
Matrix 3 × 3 · valuesΣ = 15
a brick-red frame marks a value that is a perfect square
✓Magic invariantall 8 line sums agree
·Declared maskfree configuration
·Actual result3/9 squares
✓Nondegeneracy9 pairwise-distinct entries