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Provided three coefficients a, b & c; this program can calculate the roots of a quadratic equation ie ax^2+bx+c=0.

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Simply check the code (we encourage you NOT to copy paste this code to the editor) below with the one you wrote yourself.

For the complete lab report including background theory, algorithm, flow chart, along with full downloadable pdf document, please go here.

/************************************************

SUBJECT : NUMERICAL METHODS

LAB 1: TO FIND THE ROOTS OF QUADRATIC EQUATIONS

BRIEF ALGORITHM:

1.START

2.INPUT COEFFICEINTS- A,B ,C

3.COMPUTE DETERMINANT- D

4.CHECK IF D IS REAL OR IMAGINERY

…..

…..

…..

5.STOP

*************************************************/

#include
#include
#include
#include

void main()

{
//defining variables
float A,B,C;
float D;
clrscr(); //clearing the screen if previously loaded

cout<<“Enter the coefficients A, B, C\n”;
cin>>A>>B>>C;

D=(B*B-4.0*A*C);
cout<<“\nFine, the determinant D= ” <

if (D>=0)
{
cout<<“\n\nThe roots are REAL.”;

double X1=(-B+sqrt(D))/(2.0*A);
double X2=(-B-sqrt(D))/(2.0*A);

cout<<“\n\t”<<< “\n\t”<
}

else
{
cout<<“\n\nThe roots are COMPLEX.”;

double RealPart= -B/(2.0*A);
double ImagPart= -sqrt(abs(D))/(2.0*A);

cout<<“\n\t”<<< “\n\t”<

}

cout<<“\n\n\nWritten in C++; Thank you”;
getch();
}
To write a program to calculate the roots of a quadratic equation ie ax^2+bx+c=0 in C++ Programming Language for Numerical Methods for Engineering Students

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