Applets:Periodendauer periodischer Signale: Unterschied zwischen den Versionen

Version vom 18. September 2017, 23:01 Uhr

Funktion: $$x(t) = A_1\cdot cos\Big(2\pi f_1\cdot t- \frac{2\pi}{360}\cdot \phi_1\Big)+A_2\cdot cos\Big(2\pi f_2\cdot t- \frac{2\pi}{360}\cdot \phi_2\Big)$$

Gitterlinien Zeigen

@@ Zeile 1: / Zeile 1: @@
+<p>
+{{BlaueBox|TEXT=
+<B style="font-size:18px">Funktion:</B>
+$$x(t) = A_1\cdot cos\Big(2\pi f_1\cdot t- \frac{2\pi}{360}\cdot \phi_1\Big)+A_2\cdot cos\Big(2\pi f_2\cdot t- \frac{2\pi}{360}\cdot \phi_2\Big)$$
+}}
+</p>
 <html>
@@ Zeile 25: / Zeile 31: @@
 </head>
-<body>
+<body onload="drawNow()">
+<!-- Resetbutton, Checkbox und Formel -->
+<p>
+    <input type="checkbox" id="gridbox" onclick="showgrid();" checked> <label for="gridbox">Gitterlinien Zeigen</label>
+    <button class="button" onclick="drawNow();">Reset</button>
+</p>
 <div id="cnfBoxHtml" class="jxgbox" style="width:600px; height:150px;  float:top; margin:-10px 20px 100px 0px;"></div>
 <div id="pltBoxHtml" class="jxgbox" style="width:600px; height:600px; border:1px solid black; margin:-100px 20px 10px 0px;"></div>
-<!-- Ausgabefelder -->
-<table>
-    <tr>
-        <td>$x(t)$= <span id="x(t)"></span>  $\quad$ </td>
-        <td>$x(t+ T_0)$= <span id="x(t+T_0)"></span>  $\quad$ </td>
-        <td>$x(t+2T_0)$= <span id="x(t+2T_0)"></span>  $\quad$ </td>
-        <td>$x_{\text{max}}$= <span id="x_max"></span>  $\quad$ </td>
-        <td style="color:blue;">$T_0$= <span id="T_0"></span>  $\quad$ </td>
-    </tr>
-</table>
 <script type="text/javascript">
+ function drawNow() {
          // Grundeinstellungen der beiden Applets
          JXG.Options.text.useMathJax = true;
-         var cnfBox = JXG.JSXGraph.initBoard('cnfBoxHtml', {
+         cnfBox = JXG.JSXGraph.initBoard('cnfBoxHtml', {
              showCopyright: false, showNavigation: false, axis: false,
              grid: false, zoom: { enabled: false }, pan: { enabled: false },
              boundingbox: [-1, 2.2, 12.4, -2.2]
          });
-         var pltBox = JXG.JSXGraph.initBoard('pltBoxHtml', {
+         pltBox = JXG.JSXGraph.initBoard('pltBoxHtml', {
              showCopyright: false, axis: false,
              zoom: { factorX: 1.1, factorY: 1.1, wheel: true, needshift: true, eps: 0.1 },
              grid: false, boundingbox: [-0.5, 2.2, 12.4, -2.2]
          });
+        cnfBox.addChild(pltBox);
+    };
+    // Definition der Funktion zum An- und Ausschalten des Koordinatengitters
+    function showgrid() {
+        if (gridbox.checked) {
+            xaxis = pltBox.create('axis', [ [0, 0], [1, 0] ], {});
+            yaxis = pltBox.create('axis', [ [0, 0], [0, 1] ], {});
+        } else {
+            xaxis.removeTicks(xaxis.defaultTicks);
+            yaxis.removeTicks(yaxis.defaultTicks);
+        }
+        pltBox.fullUpdate();
+    };
 </script>
 </body>