<head>
<title>Menghitung Persamaan Fungsi Kuadrat</title>
</head>
<body>
<script language ="JavaScript">
<!--
function det(a,b,c) {
var d = (b*b) - (4*a*c);
return(d);
}
var a = parseFloat(prompt(" Masukan nilai A : \nFormat persamaan kuadrat : ax2 + bx + c = 0"));
var b = parseFloat(prompt(" Masukan nilai B : \nFormat persamaan kuadrat : ax2 + bx + c = 0"));
var c = parseFloat(prompt(" Masukan nilai C : \nFormat persamaan kuadrat : ax2 + bx + c = 0"));
var deter = det(a,b,c);
document.write("Nilai Determinannya = " +deter+"<br>");
document.write("<br>");
if (deter>0)
{
var x1 = (-b - Math.sqrt(deter))/(2*a);
var x2 = (-b + Math.sqrt(deter))/(2*a);
document.write("Nilai x1 = " +x1+ "<br>");
document.write("Nilai x2 = " +x2+ "<br>");
document.write("<br>");
document.write("Akar-akarnya Berbeda");
} else
if (deter==0)
{
var x1 = (-b - Math.sqrt(deter))/(2*a);
var x2 = (-b + Math.sqrt(deter))/(2*a);
document.write("Nilai x1 = " +x1+ "<br>");
document.write("Nilai x2 = " +x2+ "<br>");
document.write("<br>");
document.write("Akar-akarnya Sama");
} else
if (deter<0)
{
document.write("akarnya imaginer");
}else {
alert("Data yang anda masukan salah,, Harus angka");
}
</script>
</body>
</html>
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