Casio FX-9750G PLUS User's Manual & Technical Reference page 231

• Certain View Window parameters can produce errors in values produced as
graph analysis result.
• The message "Not Found" appears on the display when graph analysis is
unable to produce a result.
• The following can result in inaccurate analysis results or may even make it
impossible to obtain a solution at all.
— When the solution is tangent to the
— When the solution is a point of tangency between two graphs.
Conic Section Graph Analysis
x
-axis.
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