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Using G-Solve Menu Commands
When multiple solutions are obtained by a G-Solve command, only one solution is displayed at a time. For
example, executing [Analysis] - [G-Solve] - [Focus] for an ellipse that has two foci will display only one focus
at a time. In a case such as this, use the left and right cursor keys (or tap the left and right graph controller
arrows) to cycle between the available solutions.
u To determine the focus of the parabola
1. On the Conics Editor window, input the conics equation and then tap ^ to graph it.
• Here, input the parabolic equation
2. Tap [Analysis] and then [G-Solve]. Next, on the submenu that appears,
select the command you want. To determine the focus for this example,
select [Focus].
• Press the left and right cursor keys to toggle the display between the two
foci.
The following are examples for other G-Solve commands.
0403
To determine the axis of symmetry of the parabola
0404
To determine the center point of the circle
0405
To determine the radius of the circle
0406
To determine the asymptotes of the hyperbola
0407
To determine the eccentricity of the ellipse
0408
To determine the
4-4 Modifying a Graph (Dynamic Modify)
A graph can be modified in real time as you change its parameter values.
u To modify a graph
0409
To observe the form and position of the graph of the parabola
c
are each changed within a range of –2 to 2
x
y
= 2(
– 1)
x
2
+
x
-intercept of the parabola
x
y
2
= 2(
– 1)
– 2
2
– 2.
x
y
= 2(
– 1)
2
x
2
y
2
x
y
+
+ 4
– 6
+ 9 = 0
y
2
x
y
+ 4
– 6
+ 9 = 0
[
2
\
(
− 1)
(
− 2)
−
2
2
2
3
[
\
(
− 1)
2
(
− 2)
2
+
= 1
2
2
3
2
x
y
= 2(
– 1)
2
– 2
x
– 2
2
= 1
ay
2
by
c
=
+
+
as parameters
Chapter 4: Conics Application 121
a
b
,
, and
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