HELLO, in windows application form i need some codes. imagine we have to line with this formulas:

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HELLO, in windows application form i need some codes. imagine we have to line with this formulas:
Ax + By + C = 0 & A'x + B'y + C' = 0
i want to find x & y if they have Collision.

Posted 19-Jan-13 2:30am

keivan ahmadian

Updated 19-Jan-13 2:37am

v2

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Comments

Valery Possoz 19-Jan-13 8:51am

http://www.codeproject.com/Articles/277547/Solve-Linear-and-Polynomial-Equations

Sergey Alexandrovich Kryukov 19-Jan-13 22:58pm

Not a question. Trivial issue. Not even programming, just elementary middle school mathematics. Problems? There are some textbooks around...
—SA

3 solutions

Solution 1

it is very easy, use matrices to solve these equations.

http://www.mathsisfun.com/algebra/systems-linear-equations-matrices.html[^]

C#

Another way:
1)Ax+By+C=0
2)A'x+B'y+C'=0
------------------------------
1)x=(-By+C)/A
2)-A'*((-By+C)/A)-C'=B'y
---------------------------------
2)((A'*B)/A)y+((-A'*C)/A)-C'=B'y
-----------------------------------
2)y(((A'*B)/A)-B')=((A'*C)/A)+C'
-----------------------------------
2)y=(((A'*C)/A)+C')/(((A'*B)/A)-B')

finding x will not be that difficult.

Posted 19-Jan-13 3:13am

F.moghaddampoor

Updated 19-Jan-13 4:26am

v5

Comments

keivan ahmadian 19-Jan-13 10:05am

string name;
double x;
double y;

public string Name
{
get
{
return name;
}
set
{
name = value;
}
}

public double X
{
get { return x; }
set { x = value; }
}
public double Y
{
get { return y; }
set { y = value; }
}

public double A
{
get { return A; }
set { A = value; }
}
public double B
{
get { return B; }
set { B = value; }
}
public double C
{
get { return C; }
set { C = value; }
}

public double A1
{
get { return A1; }
set { A1 = value; }
}
public double B1
{
get { return B1; }
set { B1 = value; }
}
public double C1
{
get { return C1; }
set { C1 = value; }
}
AFTER THAT I SHOUL WRITE THE LINE EQUATION AND FIND X & Y

F.moghaddampoor 19-Jan-13 13:30pm

So is it your answer?
I mean you can once find the parametric result for x and use it in your program.

Solution 2

Hi,

Here are some links that have some examples on solving the linnear equations. check them:
Solving a linear equation
Linear Equations QuickStart Sample (C#)
Linear equations in c#

Thanks

Posted 19-Jan-13 3:23am

sisir patro

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keivan ahmadian · Accepted Answer · 2013-01-19T04:10:00

C#

string name;
double x;
double y;

public string Name
{
    get
    {
        return name;
    }
    set
    {
        name = value;
    }
}

public double X
{
    get { return x; }
    set { x = value; }
}
public double Y
{
    get { return y; }
    set { y = value; }
}



public double A
{
    get { return A; }
    set { A = value; }
}
public double B
{
    get { return B; }
    set { B = value; }
}
public double C
{
    get { return C; }
    set { C = value; }
}


public double A1
{
    get { return A1; }
    set { A1 = value; }
}
public double B1
{
    get { return B1; }
    set { B1 = value; }
}
public double C1
{
    get { return C1; }
    set { C1 = value; }
}

AFTER THAT I SHOUL WRITE THE LINE EQUATION AND FIND X & Y.