Question

5. Write a p rogram that solves the following system of equations using Cramer's rule. 5x + 7y =-1 6x+8y = 1 hat reads in three matrices A, B and C and calculates the followi 1 2 -1 0 3 -2 [1-1] 2 3 1 3 1 5 1 a. 2* A+3* B b. C c. C.A

using c++. thanks!

Answer 1

5. equation solving using cramers rule

//source code //

#include<iostream>

using namespace std;

int main() {
// we solve the linear system ax+by=e cx+dy=f in this form

cout<<"Enter 2 Equation in the format ax+by=e && cx+dy=f"<<endl; // asking user the input Execting a valid input
double a,b,e;
double c,d,f;
cin>>a;
cin>>b;
cin>>e;
cin>>c;
cin>>d;
cin>>f;

double determinant = a*d - b*c; //calculating determinant
if(determinant != 0) { // calculating x,y if determinant is not 0
double x = (e*d - b*f)/determinant;
double y = (a*f - e*c)/determinant;
cout<<"Cramer equations system: result, x = "<<x<<" y = "<<y<<endl;
} else {
cout<<"Cramer equations system: determinant is zero"<<endl;
cout<<"there are either no solutions or many solutions exist"<<endl;
}
getchar();
getchar();
return 0;
}

// sample output for the code