Casio ALGEBRA FX 2.0 PLUS Graphing User Manual
Page 95
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19990401
u To calculate the focus, vertex and latus rectum
[G-SLV]-[Focus]/[Vertex]/[Length]
○ ○ ○ ○ ○
Example
To determine the focus, vertex and latus rectum for the parabola
X = (Y – 2)
2
+ 3
Use the following V-Window settings.
Xmin = –1,
Xmax = 10,
Xscale = 1
Ymin = –5,
Ymax = 5,
Yscale = 1
4(G-SLV)
b(Focus)
(Calculates the focus.)
i
4(G-SLV)
d(Vertex)
(Calculates the vertex.)
i
4(G-SLV)
f(Length)
(Calculates the latus rectum.)
• When calculating two foci for an ellipse or hyperbolic graph, press
e to calculate the
second focus. Pressing
d returns to the first focus.
• When calculating two vertexes for an ellipse or hyperbolic graph, press
e to calculate
the second vertex. Pressing
d returns to the first vertex.
5-11-18
Function Analysis
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