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Quadratic

Description
Solves quadratic equations for inputted coefficients. Answers can be either real or complex....View A Script Demo


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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
<HTML>
<HEAD>
<META NAME="Generator" CONTENT="TextPad 4.4">
<LINK href="general.css" rel="stylesheet" type="text/css">
<SCRIPT LANGUAGE="JavaScript">
<!-- Original:  Songzi Du (xdu1@iupui.edu) -->
<!-- Web site:  http://members.tripod.com/~Songzidu/mainpageindex.html -->
<!-- Begin
function quad(form) {
a=eval(form.a.value);
b=eval(form.b.value);
c=eval(form.c.value);
x1=-b/2/a+Math.pow(Math.pow(b,2)-4*a*c,0.5)/2/a;
x2=-b/2/a-Math.pow(Math.pow(b,2)-4*a*c,0.5)/2/a;
form.x1.value = x1;
form.x2.value = x2;
if (form.x1.value == "NaN") form.x1.value="Imag.!";
if (form.x2.value == "NaN") form.x2.value="Imag.!";
}
// End -->
</SCRIPT>

</HEAD>

<BODY Background=../graphics/grayback.jpg>
<center><BR><BR><BR>
<form name=form>
<table border=1 cellpadding=2>
<tr>
<td colspan=2 align=center><b>Quadratic Equation:<br>Ax<sup>2</sup> + Bx + C = 0</b></td>
</tr>
<tr>
<td>
<center><table border=1 width=100% cellpadding=2>
<tr>
<td align=center><b>A = </b></td>
<td align=center><input type=text size=6 name="a"></td>
</tr>
<tr>
<td align=center><b>B = </b></td>
<td align=center><input type=text size=6 name="b"></td>
</tr>
<tr>
<td align=center><b>C = </b></td>
<td align=center><input type=text size=6 name="c"></td>
</tr>
</table>
</td>
<td>
<center><table border=1 width=100% cellpadding=2>
<tr>
<td colspan=2 align=center>
<input type=button value="Solve" onClick="quad(this.form)"></td>
</tr>
<tr>
<td align=center><b>X1 = </b></td>
<td align=center><input type=text size=6 name="x1"></td>
</tr>
<tr>
<td align=center><b>X2 = </b></td>
<td align=center><input type=text size=6 name="x2"></td>
</tr>
</table>
</td>
</tr>
</table>
</form>

</center>
</BODY>
</HTML>

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