some experiments with TDR math operations

Software/PC_Application/icons/math_enabled.svg

@@ -9,13 +9,13 @@
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    xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
    xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
-   width="16.50322mm"
-   height="9.36625mm"
-   viewBox="0 0 16.50322 9.36625"
+   width="9.5429888mm"
+   height="8.6545076mm"
+   viewBox="0 0 9.5429888 8.6545077"
    version="1.1"
    id="svg8"
-   inkscape:version="0.92.3 (2405546, 2018-03-11)"
-   sodipodi:docname="math_enabled.svg">
+   sodipodi:docname="math_enabled.svg"
+   inkscape:version="0.92.3 (2405546, 2018-03-11)">
   <defs
      id="defs2" />
   <sodipodi:namedview
@@ -25,9 +25,9 @@
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      inkscape:pageopacity="0.0"
      inkscape:pageshadow="2"
-     inkscape:zoom="11.2"
-     inkscape:cx="43.1742"
-     inkscape:cy="5.0657458"
+     inkscape:zoom="7.9195959"
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      inkscape:document-units="mm"
      inkscape:current-layer="layer1"
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@@ -52,28 +52,29 @@
      inkscape:label="Layer 1"
      inkscape:groupmode="layer"
      id="layer1"
-     transform="translate(-77.99312,-144.11468)">
+     transform="translate(-84.809019,-129.3552)">
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        xml:space="preserve"
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+    <path
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   </g>
 </svg>