| Imports System.Threading | |
| Public Class Quadratic | |
| Public Shared Function quadForm(ByVal a As Double, ByVal b As Double, ByVal c As Double) As Tuple(Of Double, Double) | |
| Dim preRoot = ((b * b) - (4 * (a * c))) | |
| If (preRoot < 0) Then | |
| Return New Tuple(Of Double, Double)(Double.NaN, Double.NaN) | |
| Else | |
| Dim r1 = ((Math.Sqrt(preRoot)) - b) / (2 * a) | |
| Dim r2 = ((-Math.Sqrt(preRoot)) - b) / (2 * a) | |
| Return New Tuple(Of Double, Double)(r1, r2) | |
| End If | |
| End Function | |
| End Class | |