Question about Texas Instruments TI-83 Plus Calculator
The actual graph depends on the constants (parameters) that are in the equation. Try playing with the dimensions of the window by zooming in or zooming out.
The most interesting part of the graph is the region near the maximum or minimum.
Here is a graph of the function y=X^2-5X 13 when drawn with standard window dimensions
Not very revealing. However if you press the Zoom key and select [2:ZoomIn] you see this (no changes) but the calculator is ready to accept your input concerning the new center of the graph.
At this stage, use the Arrow keys to move the center of the graph to another point as in the neWhen I'm entering a quadratic function, I'm - 0e09736.jpgapture.
Notice the new center as a sign on the screWhen I'm entering a quadratic function, I'm - fc695b8.jpgcoordinates at the bottom. By pressing [ENTER] you get this
If you keep Zooming in you may end up having something that does not look like a parabola anymore.
To summarize: Use the Zoom In or Zoom Out functions or find where the minimum/maximum is, center the graph on that point and modify the windows dimensions (Xmin, Xmax, Ymin, and Ymax) so as to get as much of the interesting part of the graph as possible.
Posted on Sep 06, 2010
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Posted on Jan 02, 2017
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