Casio Algebra FX 2.0 User Manual page 245

u To calculate the focus, vertex and latus rectum
Example To determine the focus, vertex and latus rectum for the parabola
X = (Y – 2)
Use the following V-Window settings.
Xmin = –1,
Ymin = –5,
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
+ 3
2
Xmax = 10, Xscale = 1
Ymax = 5, Yscale = 1
19990401
[G-SLV]-[Focus]/[Vertex]/[Length]