Tugas Miggu #3 (11 Maret 2015)

Tugas Individu:

Sempurnakan algoritma 3.3. dengan akar imajiner berbentuk : a + bi dengan a dan b bilangan real dan bila harga : b²-4ac<0

­Jawab:

#include<iostream>

#include<stdio.h>

#include<math.h>

using namespace std;

class imajiner{

private:

float xRiil;

float xImajiner;

public:

float x;

float y;

float z;

float n;

float a;

float a1;

float a2;

void jazz(float p, float q){

 xRiil=p;

 xImajiner=q;}

float hasil();};

float imajiner::hasil(){         

cout <<"Masukkan Koefisien 1: ";     cin>>x;         

cout <<"Masukkan Koefisien 2: ";     cin>>y;          

cout <<"Masukkan Koefisien 3: ";     cin>>z; 

n = y * y - 4 * x * z;                              

cout << "Diskriminan (" << y << " * " << y << " - 4 * " << x << " + " << z <<") = " << n << endl;

cout << "Akar persamaan " << x <<"x^2 + " << y << "x + " << z <<" = 0:" << endl;

if (n > 0)

{                        

a1 = (-y+sqrt(n))/(2*x);

a2 = (-y-sqrt(n))/(2*x);

cout << "x1 = " << a1 << endl;

cout << "x2 = " << a2 << endl;

}

else if (n == 0)

{

a = -y/(2*x);

cout << "x1 = x2 = " << a << endl;

}

else

{

xRiil = -y/(2*x);

xImajiner = sqrt(-n)/(2*x); 

                          

cout << "Imajiner: " << endl;

cout << "x1 = " << xRiil << " + " << xImajiner << " * i "<< endl;

cout << "x1 = " << xRiil << " - " << xImajiner << " * i "<< endl;

}

}

int main(int argc, char *argv[])

{

imajiner satu;

float p,q;

satu.jazz(p,q);

satu.hasil();

return 0;

}