public static double Tailor(MathBinaryTree eq, double[,] pTable , int rank)
{
double h = pTable[0,1]-pTable[0,0];
if (rank == 0) {
return pTable[1,0];
}
else {
return 0;
}
}
public MainForm()
{
InitializeComponent();
//double[,] pt = new double[2, 7];
//pt[0, 0] = 30; pt[1, 0] = 0.5;
//pt[0, 1] = 35; pt[1, 1] = 0.5736;
//pt[0, 2] = 40; pt[1, 2] = 0.6428;
//pt[0, 3] = 45; pt[1, 3] = 0.7071;
//pt[0, 4] = 50; pt[1, 4] = 0.7660;
//pt[0, 5] = 55; pt[1, 5] = 0.8192;
//pt[0, 6] = 60; pt[1, 6] = 0.8660;
//MessageBox.Show(Functions.Postfix("a+c+b"));
MathBinaryTree te = new MathBinaryTree("5+x");
MathBinaryTree dte = te.Drive(te.Root);
double[,] pt = new double[2, 7];
pt[0, 0] = 30; pt[1, 0] = 0.5;
pt[0, 1] = 35; pt[1, 1] = 0.5736;
pt[0, 2] = 40; pt[1, 2] = 0.6428;
pt[0, 3] = 45; pt[1, 3] = 0.7071;
pt[0, 4] = 50; pt[1, 4] = 0.7660;
pt[0, 5] = 55; pt[1, 5] = 0.8192;
pt[0, 6] = 60; pt[1, 6] = 0.8660;
MessageBox.Show(@"Rectangles method : " + Integration.Rects(pt).ToString() + @" , Trapezoid method : " + Integration.Trapezoid(pt).ToString() + @" , Simpson method : "+ Integration.Simpson(pt).ToString());
}
/// <summary>
/// Eval the specified value of function.
/// </summary>
/// <param name='val'>
/// Value.
/// </param>
public double Eval(double val)
{
double res = 0;
MathBinaryTree tmpTree = new MathBinaryTree();
tmpTree.Clone(this);
for (int i = 0; i < Nodes.Count; i++)
{
if (this[i] != null && this[i].Op != Operator.None)
{
switch (this[i].Op)
{
case Operator.Pow:
res = Math.Pow(this[this[i].Lchild].Num, this[this[i].Rchild].Num);
this[i].Create(res, this[i].ParentId);
break;
case Operator.Mult:
res = this[this[i].Lchild].Num * this[this[i].Rchild].Num;
this[i].Create(res, this[i].ParentId);
break;
case Operator.Sum:
res = this[this[i].Lchild].Num + this[this[i].Rchild].Num;
this[i].Create(res, this[i].ParentId);
break;
case Operator.Sub:
res = this[this[i].Lchild].Num - this[this[i].Rchild].Num;
this[i].Create(res, this[i].ParentId);
break;
case Operator.Div:
res = this[this[i].Lchild].Num / this[this[i].Rchild].Num;
this[i].Create(res, this[i].ParentId);
break;
case Operator.Abs:
res = Math.Abs(this[this[i].Rchild].Num);
this[i].Create(res, this[i].ParentId);
break;
case Operator.Acos:
res = Math.Acos(this[this[i].Rchild].Num);
this[i].Create(res, this[i].ParentId);
break;
case Operator.Cos:
res = Math.Cos(this[this[i].Rchild].Num);
this[i].Create(res, this[i].ParentId);
break;
case Operator.ASin:
res = Math.Asin(this[this[i].Rchild].Num);
this[i].Create(res, this[i].ParentId);
break;
case Operator.Atan:
res = Math.Atan(this[this[i].Rchild].Num);
this[i].Create(res, this[i].ParentId);
break;
case Operator.Cosh:
res = Math.Cosh(this[this[i].Rchild].Num);
this[i].Create(res, this[i].ParentId);
break;
case Operator.Sin:
res = Math.Sin(this[this[i].Rchild].Num);
this[i].Create(res, this[i].ParentId);
break;
case Operator.Tan:
res = Math.Tan(this[this[i].Rchild].Num);
this[i].Create(res, this[i].ParentId);
break;
case Operator.Cot:
res = 1 / Math.Tan(this[this[i].Rchild].Num);
this[i].Create(res, this[i].ParentId);
break;
case Operator.Ln:
res = Math.Log(this[this[i].Rchild].Num);
this[i].Create(res, this[i].ParentId);
break;
case Operator.Exp:
res = Math.Exp(this[this[i].Rchild].Num);
this[i].Create(res, this[i].ParentId);
break;
}
}
else if (this[i].Varname != '\0')
{
this[i].Varname = '\0';
this[i].Num = val;
}
}
this.Clone(tmpTree);
return res;
}
public void Clone(MathBinaryTree Original)
{
this.Nodes.Clear();
foreach (MathNode Node in Original.Nodes)
{
if (Node != null)
{
MathNode t = new MathNode();
t = Node.Clone();
this.Nodes.Add(t);
}
}
this.Root = Original.Root;
}
private void TxtbxMathExpressionLeave(object sender, EventArgs e)
{
if ((((TextBox)sender).Text == @"Enter mathematical expression") || (((TextBox)sender).Text == ""))
{
((TextBox)sender).Text = @"Enter mathematical expression";
((TextBox)sender).Font = txtbxInactive.Font;
((TextBox)sender).ForeColor = txtbxInactive.ForeColor;
}
else
{
if (txtbxVariable.Text == "")
{
_mathEx = new MathBinaryTree(txtbxMathExpression.Text);
}
else
{
_mathEx = new MathBinaryTree(txtbxMathExpression.Text,txtbxVariable.Text);
}
InitilizePtable();
}
}
