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
Содержание ALGEBRA FX 2.0
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