Visualization of Complex Integral with GeoGebra
I created GeoGebra worksheets visualizing complex number integration.
For details, please see the youTube or PDF whose links are listed below.
The image below shows an example from the PDF. Integrating the complex
number represented by the arrow vector along the curve on the left yields
the result shown in the right figure.
These were created with GeoGebra, so you can freely change the curves and
functions yourself to observe how the integration proceeds. Three types
are uploaded on the GeoGebra site below. There are 3 files there: integration
along a circle, integration along a line segment + arc, and integration
along a curve with parameterized representation. For details, please see
my YouTube site below. The PDF provides a very concise explanation of complex
integration theory. The figure above is taken from that PDF.
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