Hello everyone. I got a assignment that states.
The set of linear equations
a11X1 = a12X2 = c1
a21X1 = a22X2 = c2
May be solved using Cramer’s rule:
X1 = c1a22 – c2a12
a11a22 – a12a21
X2 = c2a11 – c1a21
A11a22 – a12a21
Use these equations to design, write, compile, execute and debug a program that will solve for X1 and X2 in the following equations.
3X1 + 4X2 = 40
5X1 = 2X2 = 34
Alright the question I have is how do begin? I'm new to the whole program and I have to admit I don't have the slightest clue what to do. This what I've got so far and I don't know where to go from here:
#include <iostream>
using namespace std;
int main()
{
double float,
return 0;
}
:-/
BTW, I use Visual C++ 2008 Express Edition if that matters.
Someone please help me. Thanks in advance.
1 3207 JosAH 11,448
Recognized Expert MVP
If you have a 2x2 matrix and a vector (arrray) with two elements
you have to write the following functions: -
double a[2][2]; /* the matrix */
-
double c[2]; /* the rhs vector */
-
...
-
void swap(int index);
-
double det();
-
The swap function swaps column 'index' with vector c and the det
function calculates the determinant of matrix a. On top of that
you need a bit of code to read the matrix and vector values
and print some results.
kind regards,
Jos
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