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<head>
<title>mpllaskut.xml</title>
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<body bgcolor="FFFFFF">
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<a href="../liite/mpllaskut.mws" target="liite">mpllaskut.mws</a>

<p align="center">
<b><u><font color="#000000" size="5">&nbsp;Vektorien laskutoimituksia Maplessa</font></u></b>
</p>
<p align="left">
<font color="#000000">Aluksi on hyvä tyhjentää muisti ja ladata vektorien ja matriisien käsittelyyn tarvittava paketti.</font>
</p>
<p align="left">
<table width="100%" border="0" cellpadding="0" cellspacing="0">
<tr>
<td valign="top"><tt>&gt; &nbsp;&nbsp;</tt></td>
<td width="100%" valign="top"><b><font color="#FF0000">restart;<br />
with(linalg):</font></b>
</td></tr>
</table>
</p>
<p align="left">
<tt><pre><font color="#0000FF" size="2">Warning, the protected names norm and trace have been redefined and unprotected<br />
</font></pre></tt>
</p>
<p align="left">
<font color="#000000">Maplessa vektorien yhteenlasku ja skalaarilla kertominen suoritetaan seuraavasti.</font>
</p>
<p align="left">
<table width="100%" border="0" cellpadding="0" cellspacing="0">
<tr>
<td valign="top"><tt>&gt; &nbsp;&nbsp;</tt></td>
<td width="100%" valign="top"><b><font color="#FF0000">a:=vector([1,2,3]):<br />
b:=vector([4,5,6]):<br />
a+b;<br />
3*b;</font></b>
</td></tr>
</table>
</p>
<p align="center">
<math xmlns='http://www.w3.org/1998/Math/MathML'>
  <mrow>
    <mi>a</mi>
    <mo>+</mo>
    <mi>b</mi>
  </mrow>
</math>
</p>
<p align="center">
<math xmlns='http://www.w3.org/1998/Math/MathML'>
  <mrow>
    <mn>3</mn>
    <mo>&InvisibleTimes;</mo>
    <mi>b</mi>
  </mrow>
</math>
</p>
<p align="left">
<font color="#000000">Pistetulo:</font>
</p>
<p align="left">
<table width="100%" border="0" cellpadding="0" cellspacing="0">
<tr>
<td valign="top"><tt>&gt; &nbsp;&nbsp;</tt></td>
<td width="100%" valign="top"><b><font color="#FF0000">dotprod(a,b);</font></b>
</td></tr>
</table>
</p>
<p align="center">
<math xmlns='http://www.w3.org/1998/Math/MathML'>
  <mn>32</mn>
</math>
</p>
<p align="left">
<font color="#000000">Ristitulo:</font>
</p>
<p align="left">
<table width="100%" border="0" cellpadding="0" cellspacing="0">
<tr>
<td valign="top"><tt>&gt; &nbsp;&nbsp;</tt></td>
<td width="100%" valign="top"><b><font color="#FF0000">crossprod(a,b);</font></b>
</td></tr>
</table>
</p>
<p align="center">
<math xmlns='http://www.w3.org/1998/Math/MathML'>
  <mfenced>
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      <mtr>
        <mtd>
          <mn>-3</mn>
        </mtd>
      </mtr>
      <mtr>
        <mtd>
          <mn>6</mn>
        </mtd>
      </mtr>
      <mtr>
        <mtd>
          <mn>-3</mn>
        </mtd>
      </mtr>
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</math>
</p>
<p align="left">
<font color="#000000">Seuraavassa yhtenlaskuissa jokaiseen a:n alkioon lisätään 1 eli 1:stä käsitellään kuten vektoria [1,1,1].</font>
</p>
<p align="left">
<table width="100%" border="0" cellpadding="0" cellspacing="0">
<tr>
<td valign="top"><tt>&gt; &nbsp;&nbsp;</tt></td>
<td width="100%" valign="top"><b><font color="#FF0000">evalm(a+1);</font></b>
</td></tr>
</table>
</p>
<p align="center">
<math xmlns='http://www.w3.org/1998/Math/MathML'>
  <mfenced>
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        <mtd>
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      </mtr>
      <mtr>
        <mtd>
          <mn>4</mn>
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</p>
<p align="left">
<font color="#000000">Vastaavasti muuttujaa </font>
<i><font color="#000000">x</font></i>
<font color="#000000">&nbsp;käsitellään kuten vektoria [</font>
<i><font color="#000000">x</font></i>
<font color="#000000">,</font>
<i><font color="#000000">x</font></i>
<font color="#000000">,</font>
<i><font color="#000000">x</font></i>
<font color="#000000">], jos summa evaluoidaan.</font>
</p>
<p align="left">
<table width="100%" border="0" cellpadding="0" cellspacing="0">
<tr>
<td valign="top"><tt>&gt; &nbsp;&nbsp;</tt></td>
<td width="100%" valign="top"><b><font color="#FF0000">a+x;<br />
evalm(a+x);</font></b>
</td></tr>
</table>
</p>
<p align="center">
<math xmlns='http://www.w3.org/1998/Math/MathML'>
  <mrow>
    <mi>a</mi>
    <mo>+</mo>
    <mi>x</mi>
  </mrow>
</math>
</p>
<p align="center">
<math xmlns='http://www.w3.org/1998/Math/MathML'>
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            <mi>x</mi>
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</math>
</p>
<p align="left">
<font color="#000000">Sijoitetaan seuraavaksi edelliseen </font>
<i><font color="#000000">x</font></i>
<font color="#000000">:n paikalle kolmialkioinen vektori.</font>
</p>
<p align="left">
<table width="100%" border="0" cellpadding="0" cellspacing="0">
<tr>
<td valign="top"><tt>&gt; &nbsp;&nbsp;</tt></td>
<td width="100%" valign="top"><b><font color="#FF0000">subs(x=vector([4,5,6]), %);</font></b>
</td></tr>
</table>
</p>
<p align="center">
<math xmlns='http://www.w3.org/1998/Math/MathML'>
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              <mo>&ApplyFunction;</mo>
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                    <mo>=</mo>
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                    <mo>=</mo>
                    <mn>6</mn>
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</math>
</p>
<p align="left">
<font color="#000000">Jos tulosta ei evaluoida välillä, voidaan </font>
<i><font color="#000000">x</font></i>
<font color="#000000">:n paikalle sijoittaa kolmialkioinen vektori siten, että päädytään erilaiseen lopputulokseen.</font>
</p>
<p align="left">
<table width="100%" border="0" cellpadding="0" cellspacing="0">
<tr>
<td valign="top"><tt>&gt; &nbsp;&nbsp;</tt></td>
<td width="100%" valign="top"><b><font color="#FF0000">a+x;</font></b>
</td></tr>
</table>
</p>
<p align="center">
<math xmlns='http://www.w3.org/1998/Math/MathML'>
  <mrow>
    <mi>a</mi>
    <mo>+</mo>
    <mi>x</mi>
  </mrow>
</math>
</p>
<p align="left">
<table width="100%" border="0" cellpadding="0" cellspacing="0">
<tr>
<td valign="top"><tt>&gt; &nbsp;&nbsp;</tt></td>
<td width="100%" valign="top"><b><font color="#FF0000">subs(x=vector([4,5,6]), %);<br />
evalm(%);</font></b>
</td></tr>
</table>
</p>
<p align="center">
<math xmlns='http://www.w3.org/1998/Math/MathML'>
  <mrow>
    <mi>a</mi>
    <mo>+</mo>
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        <mtr>
          <mtd>
            <mn>6</mn>
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</math>
</p>
<p align="center">
<math xmlns='http://www.w3.org/1998/Math/MathML'>
  <mfenced>
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</math>
</p>
<p align="left">
<table width="100%" border="0" cellpadding="0" cellspacing="0">
<tr>
<td valign="top"><tt>&gt; &nbsp;&nbsp;</tt></td>
<td width="100%" valign="top"></td></tr>
</table>
</p>
 
 
<p><b>Linkkej&#x00E4;</b></p>
<p>
<a href="vektori.xml">Vektori</a><br />
<a href="mplsyotto.xml">Vektorit ja matriisit Maplessa</a><br />
<a href="mplmalaskut.xml">Matriisien laskutoimituksia Maplessa</a><br />
<a href="mmalaskut.xml">Vektorien laskutoimituksia Mathematicassa</a><br />
&nbsp;&nbsp;&nbsp;&nbsp;Liite&nbsp;&nbsp;<a href="../liite/mpllaskut.mws" target="liite">Vektorien laskutoimituksia Maplessa</a><br />
<br  />
<br  />
Ossi Mauno 9.12.2004
</p>
 
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