<?php session_start();

//File Name: assig2twoQuaAct.php
//Purpose: solutions for quadratic equation
//Student Name: Kristin Tillotson

        $pass = $_SESSION['passwd'];
        if($pass != "hw22")
        {
                print "<center><H2><font color=red>Nope. What are you even doing on this page? </H2><font color=black><A HREF=assig2two.html> Back to Login </center>";
        }
        else
        {
?>

<font color=green>
<CENTER>
<H2>
Solution(s) for Quadratic Equation: ax<SUP>2</SUP>+bx+c=0
</H2>
<HR>
</font>

<?php
        $a = $_POST['aVar'];
        $b = $_POST['bVar'];
        $c = $_POST['cVar'];

        $d = $b*$b - 4*$a*$c;

// debugging
//      print "a = $a, b = $b, c = $c<P>";

        if($d<0)
        {
                print "No real solution.";
        }
        else if($d==0)
        {
                $x = -$b/(2*$a);
                $x = number_format($x, 2);
                print "The solution is $x.<BR>";
        }
        else
        {
                $x1 = (-$b + sqrt($d))/(2*$a);
                $x1 = number_format($x1, 1);
                $x2 = (-$b - sqrt($d))/(2*$a);
                $x2 = number_format($x2, 1);
                print "The first solution is $x1.<BR>";
                print "The second solution is $x2.<BR>";
        }

?>

</center>
<A HREF=index.html> Course Home </A> | <A HREF=assig2.html> Assignment 2 </A> | <A HREF=assig2two.html> Back to Login </A>

<?php
        }
?>