Before attending this lab, you should have read and be familiar with Chapter 3 s

Question

Before attending this lab, you should have read and be familiar with Chapter 3 sections 3.1, 3.2, and 3.3 of Delores Etter's Engineering Problem Solving with C Answer the questions below in a typed document, numbered appropriately. Print out this sheet as a cover page. Bring the completed assignment to your next lab class. 1) 2) 3) Write a conditional expression that returns a value of true if the absolute values of the variables “A" and "B" are both less than 0.0001. Write a conditional expression that returns a value of true if the absolute value of "A" is less than 0.0001, but the absolute value of "B" is greater than that threshold. Write a conditional expression that returns a value of true if the quantity B2-4AC is less than zero 4) Write an if/else statement that prints an error message in the case where the condition from 1) s true Write an assignment statement that calculates the result of the quadratic equation and puts one of the two possible solutions in a variable called x1 5) 6) B'-4AC is known as the discriminant of the quadratic equation. Assuming that the discriminant is negative, write an expression in terms of A, B, and C that describes the complex solutions of the quadratic equation. This expression should be in the form of: x=( real part) ± i"(imaginary part)

Explanation / Answer

Ans1.

#include<iostream>
#include<cmath>
using namespace std;
main()
{
   float A,B;
   cout<<"enter the value";
   cin>>A>>B;
   (A<0.0001&&B<0.0001)?cout<<"True":cout<<"false";
}

Ans2.

#include<iostream>
#include<cmath>
using namespace std;
main()
{
   float A,B;
   cout<<"enter the value";
   cin>>A>>B;
   (A<0.0001&&B>0.0001)?cout<<"True":cout<<"false";
}

Ans3

#include<iostream>
#include<cmath>
using namespace std;
main()
{
   int A,B,C,D;
   cout<<"enter the value";
   cin>>A>>B>>C;
   D=(B*B)-(4*A*C);
   (D<0)?cout<<"True":cout<<"False";
}

Ans4.

#include<iostream>
#include<cmath>
using namespace std;
main()
{
    float A,B;
   cout<<"enter the value";
   cin>>A>>B;
   if(A<0.0001&&B<0.0001)
       cout<<"True";
   else
       cout<<"False";
}

Ans5.

#include<iostream>
#include<cmath>
using namespace std;
main()
{
   float A,B,C,D,x1,x2,D1;
   cout<<"enter the value";
   cin>>A>>B>>C;
   D=(B*B)-(4*A*C);

    if(D<0)

   {

     cout<<"roots are imaginary";

   }

   else

   {

   cout<<"Roots are real and these are:";

    D1=sqrt(D);
   x1=(-B+D1)/2*A;
   x2=(-B-D1)/2*A;
   cout<<"Root X1="<<x1<<" ";
   cout<<"Root X2="<<x2<<" ";

}
}

Ans6.

#include<iostream>
#include<cmath>
using namespace std;
main()
{
   float A,B,C,D,x1,x2,D1,real,imag;
   cout<<"enter the value";
   cin>>A>>B>>C;
   D=(B*B)-(4*A*C);
   D1=sqrt(D);
   real=-B/2*A;
   cout<<"Root X1="<<real<<"+i"<<D1<<" ";
   cout<<"Root X2="<<real<<"-i"<<D1;
}

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