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<p>&nbsp;<p>
<hr noshade size="5">
<h2><a name="PolyDisc"></a>
PolyDisc
</h2>

Returns the discriminant of a polynomial.

<p><p>

<h3>
Syntax:
</h3>
<pre>d := PolyDisc(f);</pre>

<p>

<table>
<tr>
<td>discriminant (integer or finite field element)</td>
<td><pre>  d  </pre></td>
<td></td>
</tr>
<tr>
<td>polynomial</td>
<td><pre>  f  </pre></td>
<td></td>
</tr>
</table>

<p>


See also:&nbsp;&nbsp;<a href="kashref.html#PolyRedDisc">PolyRedDisc</a>

<p>

<h3>
Description:
</h3>
Returns the discriminant d\inZ of a polynomial f\inZ[x],
{\Bbb F}_q[x].

<p><p>

<p>
<hr>
<p>
<h3>
Example:
</h3>
The discriminant of x^4 + 73*x^2 - 280*x - 2399:
<pre>

kash> f := Poly(Zx, [1, 0, 73, -280, -2399]);
x^4 + 73*x^2 - 280*x - 2399
kash> PolyDisc(f);
> -10815318540400

</pre>

<p>


<hr>

<p>
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