Get ride of the useless pubdate tag.
[scilab.git] / scilab / modules / polynomials / help / ja_JP / poly.xml
1 <?xml version="1.0" encoding="UTF-8"?>
2 <refentry xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:svg="http://www.w3.org/2000/svg" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:db="http://docbook.org/ns/docbook" version="5.0-subset Scilab" xml:lang="ja" xml:id="poly">
3   <refnamediv>
4     <refname>poly</refname>
5     <refpurpose> 多項式を定義する</refpurpose>
6   </refnamediv>
7   <refsynopsisdiv>
8     <title>呼び出し手順</title>
9     <synopsis>p=poly(a,vname, ["flag"])</synopsis>
10   </refsynopsisdiv>
11   <refsection>
12     <title>パラメータ</title>
13     <variablelist>
14       <varlistentry>
15         <term>a</term>
16         <listitem>
17           <para>行列または実数値</para>
18         </listitem>
19       </varlistentry>
20       <varlistentry>
21         <term>vname</term>
22         <listitem>
23           <para>文字列, 記号変数を表します. 文字列が4文字以上の場合,
24             最初の4文字のみが使用されます.
25           </para>
26         </listitem>
27       </varlistentry>
28       <varlistentry>
29         <term>"flag"  </term>
30         <listitem>
31           <para>文字列 ("roots", "coeff"), デフォルト値は
32             "roots"です.
33           </para>
34         </listitem>
35       </varlistentry>
36     </variablelist>
37   </refsection>
38   <refsection>
39     <title>説明</title>
40     <variablelist>
41       <varlistentry>
42         <term>a が行列の場合,</term>
43         <listitem>
44           <para>
45             <literal>p</literal> は特性多項式,すなわち 
46             <literal>determinant(x*eye()-a)</literal>となり, <literal>x</literal>が 
47             記号変数となります.
48           </para>
49         </listitem>
50       </varlistentry>
51       <varlistentry>
52         <term>v がベクトルの場合,</term>
53         <listitem>
54           <itemizedlist>
55             <listitem>
56               <para>
57                 <literal>poly(v,"x",["roots"])</literal>  は
58                 <literal>v</literal>のエントリを<literal>根(roots)</literal>とし,
59                 <literal>"x"</literal>を形式変数とする多項式となります
60                 (この場合,<literal>roots</literal>と<literal>poly</literal>は逆関数となります).
61                 根が無限大の場合,最高次の係数がゼロになることに注意してください.
62               </para>
63             </listitem>
64             <listitem>
65               <para>
66                 <literal>poly(v,"x","coeff")</literal> は記号を<literal>"x"</literal>
67                 とし,<literal>v</literal>のエントリを係数とする多項式を作成します
68                 (v(1)が多項式の定数項となります).
69                 (この場合, <literal>poly</literal> と <literal>coeff</literal> が逆関数となります)
70               </para>
71             </listitem>
72           </itemizedlist>
73         </listitem>
74       </varlistentry>
75     </variablelist>
76     <para>
77       <literal>s=poly(0,"s")</literal> は記号<literal>"s"</literal>を
78       用いた多項式を定義するための準備作業です.
79     </para>
80   </refsection>
81   <refsection>
82     <title>例</title>
83     <programlisting role="example"><![CDATA[ 
84 s=poly(0,"s");
85 p=1+s+2*s^2;
86 A=rand(2,2);
87 poly(A,"x")
88 //rational fractions
89 h=(1+2*%s)/poly(1:4,'s','c')
90  ]]></programlisting>
91   </refsection>
92   <refsection role="see also">
93     <title>参照</title>
94     <simplelist type="inline">
95       <member>
96         <link linkend="coeff">coeff</link>
97       </member>
98       <member>
99         <link linkend="roots">roots</link>
100       </member>
101       <member>
102         <link linkend="varn">varn</link>
103       </member>
104       <member>
105         <link linkend="horner">horner</link>
106       </member>
107       <member>
108         <link linkend="derivat">derivat</link>
109       </member>
110       <member>
111         <link linkend="matrices">matrices</link>
112       </member>
113       <member>
114         <link linkend="rational">rational</link>
115       </member>
116     </simplelist>
117   </refsection>
118 </refentry>