using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
namespace KramerMax
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
float def(float[,] a) //находим определитель
{
float def;
def = a[1,1]*a[2,2]*a[3,3] + a[1,2]*a[2,3]*a[3,1] + a[2,1]*a[3,2]*a[1,3] - a[1,3]*a[2,2]*a[3,1] - a[1,2]*a[2,1]*a[3,3] - a[1,1]*a[2,3]*a[3,2];
return def;
}
private void button1_Click(object sender, EventArgs e)
{
xt.Text = "";
yt.Text = "";
zt.Text = "";
tssl.Text = "";
if (a11.Text == "" || a12.Text == "" || a13.Text == "" || a21.Text == "" || a22.Text == "" || a23.Text == "" || a31.Text == "" || a32.Text == "" || a33.Text == "")
{
tssl.Text = "Введены не все коэффициенты";
}
else
{
float[,] a = new float[4, 4];
a[1, 1] = float.Parse(a11.Text);
a[1, 2] = float.Parse(a12.Text);
a[1, 3] = float.Parse(a13.Text);
a[2, 1] = float.Parse(a21.Text);
a[2, 2] = float.Parse(a22.Text);
a[2, 3] = float.Parse(a23.Text);
a[3, 1] = float.Parse(a31.Text);
a[3, 2] = float.Parse(a32.Text);
a[3, 3] = float.Parse(a33.Text);
deftxt.Text = def(a).ToString();
}
}
private void button2_Click(object sender, EventArgs e)
{
tssl.Text = "";
if (a11.Text == "" || a12.Text == "" || a13.Text == "" || a21.Text == "" || a22.Text == "" || a23.Text == "" || a31.Text == "" || a32.Text == "" || a33.Text == "" || b1.Text == "" || b2.Text == "" || b3.Text == "")
{
tssl.Text = "Введены не все элементы уравнения";
}
else
{
float[,] A = new float[4, 4];
A[1, 1] = float.Parse(a11.Text);
A[1, 2] = float.Parse(a12.Text);
A[1, 3] = float.Parse(a13.Text);
A[2, 1] = float.Parse(a21.Text);
A[2, 2] = float.Parse(a22.Text);
A[2, 3] = float.Parse(a23.Text);
A[3, 1] = float.Parse(a31.Text);
A[3, 2] = float.Parse(a32.Text);
A[3, 3] = float.Parse(a33.Text);
float D = def(A);
deftxt.Text = D.ToString();
float[,] a = new float[4, 4];
a[1, 1] = float.Parse(b1.Text);
a[1, 2] = float.Parse(a12.Text);
a[1, 3] = float.Parse(a13.Text);
a[2, 1] = float.Parse(b2.Text);
a[2, 2] = float.Parse(a22.Text);
a[2, 3] = float.Parse(a23.Text);
a[3, 1] = float.Parse(b3.Text);
a[3, 2] = float.Parse(a32.Text);
a[3, 3] = float.Parse(a33.Text);
float Dx = def(a);
float[,] b = new float[4, 4];
b[1, 1] = float.Parse(a11.Text);
b[1, 2] = float.Parse(b1.Text);
b[1, 3] = float.Parse(a13.Text);
b[2, 1] = float.Parse(a21.Text);
b[2, 2] = float.Parse(b2.Text);
b[2, 3] = float.Parse(a23.Text);
b[3, 1] = float.Parse(a31.Text);
b[3, 2] = float.Parse(b3.Text);
b[3, 3] = float.Parse(a33.Text);
float Dy = def(b);
float[,] c = new float[4, 4];
c[1, 1] = float.Parse(a11.Text);
c[1, 2] = float.Parse(a12.Text);
c[1, 3] = float.Parse(b1.Text);
c[2, 1] = float.Parse(a21.Text);
c[2, 2] = float.Parse(a22.Text);
c[2, 3] = float.Parse(b2.Text);
c[3, 1] = float.Parse(a31.Text);
c[3, 2] = float.Parse(a32.Text);
c[3, 3] = float.Parse(b3.Text);
float Dz = def(c);
float x, y, z;
x = Dx / D;
y = Dy / D;
z = Dz / D;
xt.Text = x.ToString();
yt.Text = y.ToString();
zt.Text = z.ToString();
}
}
}
}
