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  <region id="0" left="18" top="18" width="86" height="24" color="#000000" bgColor="#ffffff" fontSize="10">
    <text lang="eng">
      <p bold="true">Integrals</p>
    </text>
    <text lang="ger">
      <p bold="true">Integrale</p>
    </text>
  </region>
  <region id="1" left="549" top="18" width="103" height="24" color="#000000" bgColor="#ffffff" fontSize="10">
    <text lang="eng">
      <p href="Mathematik.sm">Mathematics</p>
    </text>
    <text lang="ger">
      <p href="Mathematik.sm">Mathematik</p>
    </text>
  </region>
  <region id="2" left="549" top="36" width="78" height="24" color="#000000" bgColor="#ffffff" fontSize="10">
    <text lang="eng">
      <p href="Handbook.sm">Contents</p>
    </text>
    <text lang="ger">
      <p href="Handbook.sm">Inhalt</p>
    </text>
  </region>
  <region id="3" left="18" top="72" width="710" height="280" color="#000000" bgColor="#ffffff" fontSize="10">
    <text lang="eng">
      <p>SMath can only handle definite integrals (over a specified interval) and even that only numerically.• Integration limits with units are transformed to base units and then treated as     dimensionless. • Integrands must not contain if() statements. If piecewise continuous functions     are to be integrated, then they have to be expressed using boolean operators.• The number of intervals for numeric integration is set globally using Main menu&gt;    Tools&gt; Options&gt; Calculation&gt; Integrals: Accuracy. If in doubt, increase the value     and check if the result depends on that setting. If the function is sufficiently    smooth, then the default value (100) is appropriate. Functions with discontinuities    may easily require much higher values.• For improved accuracy, the integration interval should be split at discontinuity     points.</p>
    </text>
    <text lang="ger">
      <p>SMath kann nur bestimmte Integrale (mit Integrationsgrenzen) und diese auch nur numerisch berechnen.• Größen mit Maßeinheiten an den Integrationsgrenzen werden in Basiseinheiten     umgewandelt und dann als dimensionslos betrachtet.  • Funktionen dürfen keine if()-Anweisung enthalten. Sollen stückweise stetige     Funktionen integriert werden, kann man sie durch arithmetische Ausdrücke mit     logischen Operatoren definieren. • Die Integrationsgenauigkeit wird global unter Hauptmenü&gt; Extras&gt; Einstellungen&gt;     Berechnung&gt; Integrale: Genauigkeit eingestellt. Der Wert gibt die Zahl der     Intervalle zwischen den Integrationsgrenzen an, die bei der numerischen     Berechnung verwendet wird. Im Zweifelsfall muss man den Wert erhöhen und prüfen,     in welchem Maße das Ergebnis von der Einstellung abhängt. Bei hinreichend glatten     Funktionen ist die Voreinstellung (100) gut geeignet, bei Funktionen mit     Unstetigkeiten können schnell höhere Werte erforderlich sein.• Im Interesse der Genauigkeit ist es vorteilhaft, das Integrationsgebiet an     Unstetigkeitsstellen aufzuteilen.</p>
    </text>
  </region>
  <region id="4" left="18" top="414" width="670" height="40" color="#000000" bgColor="#ffffff" fontSize="10">
    <text lang="eng">
      <p>Indefinite integrals or symbolic evaluation are not possible within SMath. As an alternative you can use the plugin Maple Wrapper.</p>
    </text>
    <text lang="ger">
      <p>Unbestimmte Integrale oder symbolische Auswertung sind mit den eingebauten Funktionen in SMath nicht möglich. Alternativ kann das Plugin Maple Wrapper benutzt werden.</p>
    </text>
  </region>
  <region id="5" left="18" top="468" width="176" height="24" color="#000000" bgColor="#ffffff" fontSize="10">
    <text lang="eng">
      <p href="Section math integration units.sm">Integrals with units</p>
    </text>
    <text lang="ger">
      <p href="Section math integration units.sm">Integrale mit Maßeinheiten</p>
    </text>
  </region>
  <region id="6" left="18" top="504" width="381" height="24" color="#000000" bgColor="#ffffff" fontSize="10">
    <text lang="eng">
      <p bold="true">Integration of piecewise continuous functions</p>
    </text>
    <text lang="ger">
      <p bold="true">Integration stückweise stetiger Funktionen</p>
    </text>
  </region>
  <region id="7" left="18" top="540" width="726" height="40" color="#000000" bgColor="#ffffff" fontSize="10">
    <text lang="eng">
      <p>The integration function int() fails if the integrand is defined using if() statements.In this case, a senseless error message is thrown (integration variable not defined).</p>
    </text>
    <text lang="ger">
      <p>Die Integrationsfunktion int() versagt, wenn Funktionen unter Verwendung von if() definiert werden. Es kommt dann die unsinnige Fehlermeldung, die Integrationsvariable sei nicht definiert.</p>
    </text>
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        <e type="function" args="1">v</e>
        <e type="operand">t</e>
        <e type="operand">0</e>
        <e type="operator" args="2">≥</e>
        <e type="bracket">(</e>
        <e type="operand">t</e>
        <e type="operand">1</e>
        <e type="operator" args="2">≤</e>
        <e type="bracket">(</e>
        <e type="operator" args="2">&amp;</e>
        <e type="operand">5</e>
        <e type="operand">t</e>
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      <p>As a workaround, you can define the function using boolean operators, which evaluateto one if true and zero if false.</p>
    </text>
    <text lang="ger">
      <p>Der Ausweg besteht in der Verwendung von logischen Operatoren, mit denen man Ausdrücke definieren kann, die nur in einem bestimmten Bereich Eins, ansonsten aber Null sind:</p>
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        <e type="operand">t</e>
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        <e type="operand">t</e>
        <e type="operand">0</e>
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        <e type="bracket">(</e>
        <e type="operator" args="2">*</e>
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        <e type="operand">1</e>
        <e type="operator" args="2">≤</e>
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    <math>
      <input>
        <e type="operand">t</e>
        <e type="function" args="1">w</e>
        <e type="operand">t</e>
        <e type="operand">2</e>
        <e type="operator" args="1">-</e>
        <e type="operand">2</e>
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      <result action="numeric">
        <e type="operand">2.5333</e>
      </result>
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  </region>
  <region id="15" left="18" top="900" width="676" height="24" color="#000000" bgColor="#ffffff" fontSize="10">
    <text lang="eng">
      <p>A convergence study shows the dependence of the result from the accuracy setting.</p>
    </text>
    <text lang="ger">
      <p>Eine Konvergenzanalyse zeigt folgende Abhängigkeit des Ergebnisses von der eingestellten Genauigkeit:</p>
    </text>
  </region>
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    <text lang="eng">
      <p bold="true">Main menu&gt; Tools&gt; Options&gt; Calculation&gt; Integrals: Accuracy.</p>
    </text>
    <text lang="ger">
      <p bold="true">(Hauptmenü&gt; Extras&gt; Einstellungen&gt; Berechnung&gt; Integrale: Genauigkeit)</p>
    </text>
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    <text lang="eng">
      <p>Accuracy</p>
    </text>
    <text lang="ger">
      <p>Genauigkeit </p>
    </text>
  </region>
  <region id="19" left="153" top="1026" width="53" height="24" color="#000000" bgColor="#ffffff" fontSize="10">
    <text lang="eng">
      <p>exact</p>
    </text>
    <text lang="ger">
      <p>exakt</p>
    </text>
  </region>
  <region id="20" left="252" top="1026" width="37" height="24" color="#000000" bgColor="#ffffff" fontSize="10">
    <math>
      <input>
        <e type="operand">100</e>
      </input>
    </math>
  </region>
  <region id="21" left="324" top="1026" width="45" height="24" color="#000000" bgColor="#ffffff" fontSize="10">
    <math>
      <input>
        <e type="operand">1000</e>
      </input>
    </math>
  </region>
  <region id="22" left="396" top="1026" width="53" height="24" color="#000000" bgColor="#ffffff" fontSize="10">
    <math>
      <input>
        <e type="operand">10000</e>
      </input>
    </math>
  </region>
  <region id="23" left="27" top="1053" width="86" height="66" color="#000000" bgColor="#ffffff" fontSize="10">
    <math optimize="2">
      <input>
        <e type="operand">t</e>
        <e type="function" args="1">w</e>
        <e type="operand">t</e>
        <e type="operand">2</e>
        <e type="operator" args="1">-</e>
        <e type="operand">2</e>
        <e type="function" preserve="true" args="4">int</e>
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    </math>
  </region>
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    <math>
      <input>
        <e type="operand">2.5000</e>
      </input>
    </math>
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  <region id="25" left="234" top="1080" width="61" height="24" color="#000000" bgColor="#ffffff" fontSize="10">
    <math>
      <input>
        <e type="operand">2.5333</e>
      </input>
    </math>
  </region>
  <region id="26" left="324" top="1080" width="61" height="24" color="#000000" bgColor="#ffffff" fontSize="10">
    <math>
      <input>
        <e type="operand">2.5033</e>
      </input>
    </math>
  </region>
  <region id="27" left="396" top="1080" width="61" height="24" color="#000000" bgColor="#ffffff" fontSize="10">
    <math>
      <input>
        <e type="operand">2.5003</e>
      </input>
    </math>
  </region>
  <region id="28" left="18" top="1125" width="708" height="40" color="#000000" bgColor="#ffffff" fontSize="10">
    <text lang="eng">
      <p>Due to the discontinuity at point t=1, the error is greater than 1% with the standardsetting for accuracy (100 intervals)</p>
    </text>
    <text lang="ger">
      <p>Aufgrund der Unstetigkeit bei t=1 kommt es bei der Standardeinstellung Genauigkeit 100) zu einem Fehler von über einem Prozent.</p>
    </text>
  </region>
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    <text lang="eng">
      <p bold="true">Integration with variable limits</p>
    </text>
    <text lang="ger">
      <p bold="true">Integration mit variablen Grenzen</p>
    </text>
  </region>
  <region id="30" left="18" top="1215" width="634" height="24" color="#000000" bgColor="#ffffff" fontSize="10">
    <text lang="eng">
      <p>It is possible to define functions involving integrals with variable limits:</p>
    </text>
    <text lang="ger">
      <p>Man kann Funktionen definieren, die Integrationen mit variablen Grenzen enthalten: </p>
    </text>
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        <e type="function" args="1">f</e>
        <e type="operand">y</e>
        <e type="operand">y</e>
        <e type="operand">1</e>
        <e type="operator" args="1">-</e>
        <e type="operand">x</e>
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    <text lang="eng">
      <p>Take care to use different variable for limit(here x) and integration (here x)!</p>
    </text>
    <text lang="ger">
      <p>Achtung: Benennen Sie die Grenze und die Integrationsvariableunterschiedlich!</p>
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        <e type="operator" args="2">:</e>
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    <math>
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        <e type="operand">1</e>
        <e type="operator" args="1">-</e>
        <e type="operand">1</e>
        <e type="operand">1</e>
        <e type="operator" args="1">-</e>
        <e type="operand">0.5</e>
        <e type="operator" args="2">+</e>
        <e type="function" preserve="true" args="3">range</e>
        <e type="operand">M</e>
        <e type="operand">M</e>
        <e type="operand">X</e>
        <e type="operand">X</e>
        <e type="function" args="1">f</e>
        <e type="operand">1</e>
        <e type="operand">2</e>
        <e type="function" preserve="true" args="4">mat</e>
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    <math>
      <input>
        <e type="operand">M</e>
      </input>
      <result action="numeric">
        <e type="operand">1</e>
        <e type="operator" args="1">-</e>
        <e type="operand">0</e>
        <e type="operand">0.5</e>
        <e type="operator" args="1">-</e>
        <e type="operand">0.375</e>
        <e type="operator" args="1">-</e>
        <e type="operand">0</e>
        <e type="operand">0.5</e>
        <e type="operator" args="1">-</e>
        <e type="operand">0.5</e>
        <e type="operand">0.375</e>
        <e type="operator" args="1">-</e>
        <e type="operand">1</e>
        <e type="operand">2.9606</e>
        <e type="operand">10</e>
        <e type="operand">17</e>
        <e type="operator" args="1">-</e>
        <e type="operator" args="2">^</e>
        <e type="operator" args="2">*</e>
        <e type="operand">5</e>
        <e type="operand">2</e>
        <e type="function" preserve="true" args="12">mat</e>
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    <text lang="eng">
      <p>Expressions with variable integration limits may fail to be plotted.</p>
    </text>
    <text lang="ger">
      <p>Ausdrücke mit variablen Grenzen lassen sich allerdings nicht ohne weiteres plotten.</p>
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    <text lang="eng">
      <p>Using the built-in 2D plot region, the plot succeeds only if you define the expression as function and use eval() either in the definition or in the call.</p>
    </text>
    <text lang="ger">
      <p>Beim Standard-Diagrammbereich gelingt der Plot erst, wenn man den Ausdruck alsFunktion definiert und bei Definition oder Aufruf eval() anwendet</p>
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        <e type="function" args="1">f.e</e>
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        <e type="operand">y</e>
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      <p>Using the X-Y Plot-plugin, you can - either use a function (without need to use eval())- or pre-define the dummy integration variable with whatever value, just to make sure    that the plot region does not complain about a function of two variables.</p>
    </text>
    <text lang="ger">
      <p>Beim Diagrammbereich aus dem Plugin X-Y Plot:- muss entweder auch eine Funktion verwendet werden (ohne dass eval() erforderlich ist) - oder die Integrationsvariable, die im Ausdruck verwendet wird, muss mit einem Wert     belegt werden, damit der Plotbereich nicht annimmt, das der Ausdruck von zwei     Variablen abhängig ist.</p>
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        <trace seriesname="" isy2data="false" isvisible="true" plotmethod="Lines" linecolor="Blue" linethickness="1" linepattern="Solid" symbolsize="8" symboltype="None" symbolborderthickness="1" symbolbordercolor="Black" symbolfillcolor="White" />
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        <e type="operand">x</e>
        <e type="function" args="1">f</e>
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    <math>
      <input>
        <e type="operand">y</e>
        <e type="operand">1</e>
        <e type="operator" args="2">:</e>
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    <xyplot width="126" height="114" smoothing="false" points="100" propertiessource="None">
      <grid gridcolor="LightGray" gridpattern="Solid" gridthickness="1" isxgrid="true" isygrid="true" />
      <xaxes xmin="-3.397386" xmax="3.397386" xtick="2.5" numberformat="General" decimalplaces="3" />
      <yaxes ymin="-0.6794772" ymax="0.6794772" ytick="0.5" numberformat="General" decimalplaces="3" />
      <y2axes isy2axis="false" y2min="-1" y2max="1" y2tick="0.5" numberformat="General" decimalplaces="3" />
      <title2d title="Title" titlefont="Arial, 12pt" titlefontcolor="Black" />
      <xylabel labelfont="Arial, 10pt" labelfontcolor="Black" tickfont="Courier New, 10pt" tickfontcolor="Black" xlabel="x" ylabel="y" y2label="y2" />
      <legend isbordervisible="true" islegendvisible="false" legendbackcolor="White" legendbordercolor="Black" legendfont="Arial, 8pt" legendposition="NorthEast" textcolor="Black" />
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        <trace seriesname="" isy2data="false" isvisible="true" plotmethod="Lines" linecolor="Blue" linethickness="1" linepattern="Solid" symbolsize="8" symboltype="None" symbolborderthickness="1" symbolbordercolor="Black" symbolfillcolor="White" />
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      <input>
        <e type="operand">y</e>
        <e type="operand">y</e>
        <e type="operand">1</e>
        <e type="operator" args="1">-</e>
        <e type="operand">x</e>
        <e type="function" preserve="true" args="4">int</e>
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  </region>
  <region id="49" left="18" top="2106" width="103" height="24" color="#000000" bgColor="#ffffff" fontSize="10">
    <text lang="eng">
      <p href="Mathematik.sm">Mathematics</p>
    </text>
    <text lang="ger">
      <p href="Mathematik.sm">Mathematik</p>
    </text>
  </region>
  <region id="50" left="18" top="2124" width="78" height="24" color="#000000" bgColor="#ffffff" fontSize="10">
    <text lang="eng">
      <p href="Handbook.sm">Contents</p>
    </text>
    <text lang="ger">
      <p href="Handbook.sm">Inhalt</p>
    </text>
  </region>
  <region id="51" left="18" top="2160" width="450" height="40" color="#000000" bgColor="#ffffff" fontSize="10">
    <text lang="ger">
      <p italic="true">$Author: mkraska $$Date: 2013-08-17 07:17:31 +0200 (Sa, 17. Aug 2013) $ </p>
    </text>
  </region>
</regions>