public string MakeFunctionFormulaToPrint()
{
string OutputString = "Beregninger på funktionen med forskriften : f(x) = ";
OutputString += PrintOutTools.WriteNumberWithParanthesis(this.ACoefficient) + "x^2 + ";
OutputString += PrintOutTools.WriteNumberWithParanthesis(this.BCoefficient) + "x + ";
OutputString += PrintOutTools.WriteNumberWithParanthesis(this.CCoefficient);
return(OutputString);
}
public Point2Dimensions CalculatePointYAxisCross()
{
this.PointYAxisCross.XCoordinate = 0;
this.PointYAxisCross.YCoordinate = this.CCoefficient;
if (IsTextBlockSet())
{
this.TextBlock_Object.Text += Environment.NewLine;
this.TextBlock_Object.Text += Environment.NewLine;
this.TextBlock_Object.Text += "Parablen skærer y aksen i punktet : (x ; y) = ( 0; " +
PrintOutTools.WritDecimalStringWithSpecifiedNumberOfDecimals(this.PointYAxisCross.YCoordinate, Const.DefaultNumberOfDecimals) + ")";
}
return(this.PointYAxisCross);
}
public double CalculateDiskriminant()
{
this.Diskriminant = Math.Pow(this.BCoefficient, 2) - 4 * this.ACoefficient * this.CCoefficient;
if (IsTextBlockSet() && ShowDiskriminantCalculations)
{
this.TextBlock_Object.Text += Environment.NewLine;
this.TextBlock_Object.Text += Environment.NewLine;
this.TextBlock_Object.Text += "Diskriminant = ";
this.TextBlock_Object.Text += PrintOutTools.WriteNumberWithParanthesis(this.BCoefficient) + "^2";
this.TextBlock_Object.Text += " - 4 * " + PrintOutTools.WriteNumberWithParanthesis(this.ACoefficient);
this.TextBlock_Object.Text += " * " + PrintOutTools.WriteNumberWithParanthesis(this.CCoefficient);
this.TextBlock_Object.Text += " = " + PrintOutTools.WritDecimalStringWithSpecifiedNumberOfDecimals(this.Diskriminant, Const.DefaultNumberOfDecimals);
}
return(this.Diskriminant);
}
public FunctionValueCalculation(SecondOrderFunction SecondOrderFunction_Objext,
double XValue)
{
this.XValue = XValue;
this.YValue = SecondOrderFunction_Objext.ACoefficient * Math.Pow(this.XValue, 2) +
SecondOrderFunction_Objext.BCoefficient * this.XValue +
SecondOrderFunction_Objext.CCoefficient;
this.CalculationIndex = OverallCalculationIndex++;
this.CalculationText = "y = f(";
this.CalculationText += PrintOutTools.WritDecimalStringWithSpecifiedNumberOfDecimals(this.XValue, Const.DefaultNumberOfDecimals) + ") = ";
this.CalculationText += PrintOutTools.WriteNumberWithParanthesis(SecondOrderFunction_Objext.ACoefficient) + " * ";
this.CalculationText += PrintOutTools.WriteNumberWithParanthesis(this.XValue) + "^2 + ";
this.CalculationText += PrintOutTools.WriteNumberWithParanthesis(SecondOrderFunction_Objext.BCoefficient) + " * ";
this.CalculationText += PrintOutTools.WriteNumberWithParanthesis(this.XValue) + " + ";
this.CalculationText += PrintOutTools.WriteNumberWithParanthesis(SecondOrderFunction_Objext.CCoefficient);
this.CalculationText += " = ";
this.CalculationText += PrintOutTools.WriteNumberWithParanthesis(YValue);
}
public Point2Dimensions CalculateExtremumPoint()
{
this.Diskriminant = this.CalculateDiskriminant();
this.PointExtremum.XCoordinate = -this.BCoefficient / (2 * this.ACoefficient);
this.PointExtremum.YCoordinate = -this.Diskriminant / (4 * this.ACoefficient);
if (IsTextBlockSet())
{
this.TextBlock_Object.Text += Environment.NewLine;
this.TextBlock_Object.Text += Environment.NewLine;
this.TextBlock_Object.Text += "T(x) = (-" + PrintOutTools.WriteNumberWithParanthesis(this.BCoefficient);
this.TextBlock_Object.Text += " / (2 * " + PrintOutTools.WriteNumberWithParanthesis(this.ACoefficient) + " ) ";
this.TextBlock_Object.Text += " = " + PrintOutTools.WritDecimalStringWithSpecifiedNumberOfDecimals(this.PointExtremum.XCoordinate, Const.DefaultNumberOfDecimals);
this.TextBlock_Object.Text += Environment.NewLine;
this.TextBlock_Object.Text += "T(y) = (-" + PrintOutTools.WriteNumberWithParanthesis(this.Diskriminant) + " ) ";
this.TextBlock_Object.Text += " / (4 * " + PrintOutTools.WriteNumberWithParanthesis(this.ACoefficient) + " ) ";
this.TextBlock_Object.Text += " = " + PrintOutTools.WritDecimalStringWithSpecifiedNumberOfDecimals(this.PointExtremum.YCoordinate, Const.DefaultNumberOfDecimals);
this.TextBlock_Object.Text += Environment.NewLine;
this.TextBlock_Object.Text += "Parablen har Toppunkt : (x ; y) = (" + PrintOutTools.WritDecimalStringWithSpecifiedNumberOfDecimals(this.PointExtremum.XCoordinate, Const.DefaultNumberOfDecimals) + " ; " +
PrintOutTools.WritDecimalStringWithSpecifiedNumberOfDecimals(this.PointExtremum.YCoordinate, Const.DefaultNumberOfDecimals) + ")";
}
return(this.PointExtremum);
}
public SecondOrderFunctionRoots CalculateRoots()
{
this.Diskriminant = this.CalculateDiskriminant();
if (this.Diskriminant < 0)
{
if (IsTextBlockSet())
{
this.TextBlock_Object.Text += Environment.NewLine;
this.TextBlock_Object.Text += Environment.NewLine;
this.TextBlock_Object.Text += "Parablen har ingen rødder => den skærer ikke x-aksen i nogle punkter.";
}
this.SecondOrderFunctionRoots_Object.NumberOFRoots = 0;
return(this.SecondOrderFunctionRoots_Object);
}
else
{
if (0 == this.Diskriminant)
{
SecondOrderFunctionRoots_Object.Roots[0].XCoordinate = -BCoefficient / (2 * ACoefficient);
SecondOrderFunctionRoots_Object.Roots[0].YCoordinate = 0;
if (IsTextBlockSet())
{
this.TextBlock_Object.Text += Environment.NewLine;
this.TextBlock_Object.Text += Environment.NewLine;
this.TextBlock_Object.Text += "x1 , x2 = -" + PrintOutTools.WriteNumberWithParanthesis(this.BCoefficient);
this.TextBlock_Object.Text += " / (2 * " + PrintOutTools.WriteNumberWithParanthesis(this.ACoefficient);
this.TextBlock_Object.Text += " ) = " + PrintOutTools.WritDecimalStringWithSpecifiedNumberOfDecimals(SecondOrderFunctionRoots_Object.Roots[0].XCoordinate, Const.DefaultNumberOfDecimals);
this.TextBlock_Object.Text += Environment.NewLine;
this.TextBlock_Object.Text += "Parablen har dobbelt roden : (x ; y) = (" + PrintOutTools.WritDecimalStringWithSpecifiedNumberOfDecimals(SecondOrderFunctionRoots_Object.Roots[0].XCoordinate, Const.DefaultNumberOfDecimals) + " ; 0)";
}
this.SecondOrderFunctionRoots_Object.NumberOFRoots = 1;
}
else
{
SecondOrderFunctionRoots_Object.Roots[0].XCoordinate = (-BCoefficient - Math.Sqrt(Diskriminant)) / (2 * ACoefficient);
SecondOrderFunctionRoots_Object.Roots[0].YCoordinate = 0;
SecondOrderFunctionRoots_Object.Roots[1].XCoordinate = (-BCoefficient + Math.Sqrt(Diskriminant)) / (2 * ACoefficient);
SecondOrderFunctionRoots_Object.Roots[1].YCoordinate = 0;
if (IsTextBlockSet())
{
this.TextBlock_Object.Text += Environment.NewLine;
this.TextBlock_Object.Text += Environment.NewLine;
this.TextBlock_Object.Text += "x1 = ( -" + PrintOutTools.WriteNumberWithParanthesis(this.BCoefficient);
this.TextBlock_Object.Text += " - sqrt(" + PrintOutTools.WritDecimalStringWithSpecifiedNumberOfDecimals(this.Diskriminant, Const.DefaultNumberOfDecimals) + ") ) ";
this.TextBlock_Object.Text += " / (2 * " + PrintOutTools.WriteNumberWithParanthesis(this.ACoefficient);
this.TextBlock_Object.Text += " ) = " + PrintOutTools.WritDecimalStringWithSpecifiedNumberOfDecimals(SecondOrderFunctionRoots_Object.Roots[0].XCoordinate, Const.DefaultNumberOfDecimals);
this.TextBlock_Object.Text += Environment.NewLine;
this.TextBlock_Object.Text += "x2 = (-" + PrintOutTools.WriteNumberWithParanthesis(this.BCoefficient);
this.TextBlock_Object.Text += " + sqrt(" + PrintOutTools.WritDecimalStringWithSpecifiedNumberOfDecimals(this.Diskriminant, Const.DefaultNumberOfDecimals) + ") ) ";
this.TextBlock_Object.Text += " / (2 * " + PrintOutTools.WriteNumberWithParanthesis(this.ACoefficient);
this.TextBlock_Object.Text += " ) = " + PrintOutTools.WritDecimalStringWithSpecifiedNumberOfDecimals(SecondOrderFunctionRoots_Object.Roots[1].XCoordinate, Const.DefaultNumberOfDecimals);
this.TextBlock_Object.Text += Environment.NewLine;
this.TextBlock_Object.Text += "Parablen har rødderne : (x ; y) = (" + PrintOutTools.WritDecimalStringWithSpecifiedNumberOfDecimals(SecondOrderFunctionRoots_Object.Roots[0].XCoordinate, Const.DefaultNumberOfDecimals) + " ; 0) og (" +
PrintOutTools.WritDecimalStringWithSpecifiedNumberOfDecimals(SecondOrderFunctionRoots_Object.Roots[1].XCoordinate, Const.DefaultNumberOfDecimals) + " ; 0)";
}
}
}
return(this.SecondOrderFunctionRoots_Object);
}
