Revision #268 → #1510 · back to history
addedQuadratic formulae40020e82820
addedRoots given by the quadratic formuladdd4da02cff7
addedDiscriminantcdddc3650750
addedDiscriminant determines nature of roots7bfe2094dd18
addedRoots as x-intercepts of the parabola7057e1a94992
addedIdentifying the axis of symmetry0cacbe7c509c
addedEquivalent formulation of the quadratic formulaaaeeb38faf95
addedFagnano's formula (root in denominator)22b9e97de5d4
addedCatastrophic cancellation99bf8c5b28e2
addedPocket-calculator precision-loss example8d5da9ce434d
addedBrahmagupta's solution in modern notationeab40882b6fe
addedAxis-aligned parabolaef79531a94c2
addedQuadratic formula gives x-axis crossing pointsbfbe20c9ebd9
addedFirst term gives axis of symmetry4cb62cd12f53
addedVertex on x-axis gives repeated root1758d50b1d39
addedSign of discriminant and real roots0587888f7a05
addedDimensional consistency of the coefficients41992b32cc12