public void QuadraticEquationExTest() { //equation 2x^2+3x-1 var result = EquationSolver.QuadraticEquationEx(2, 3, -1); Assert.IsTrue(result[0].ApproximatelyEquals(-1.78077640640442, 1e1 - 0)); Assert.IsTrue(result[1].ApproximatelyEquals(0.280776406404415, 1e-10)); }