Casio FX-9750GII User Manual

Page 140

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S To calculate the focus and length of latus rectum

[G-SLV]-[FOCS]/[LEN]

Example

To determine the focus and length of 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

K CONICS

U

@UAUBU(DRAW)

(FOCS)

(Calculates the focus.)

(LEN)

(Calculates the length of latus rectum.)

• When calculating two foci for an ellipse or hyperbolic graph, press

C to calculate the

second focus. Pressing

B returns to the first focus.

• When calculating two vertexes for a hyperbolic graph, press

C to calculate the second

vertex. Pressing

B returns to the first vertex.

• Pressing

C when calculating the vertices of an ellipse will calculate the next value.

Pressing

B will scroll back through previous values. An ellipse has four vertices.

S To calculate the center

[G-SLV]-[CNTR]

Example

To determine the center for the circle

(X + 2)

2

+ (Y + 1)

2

= 2

2

K CONICS

AAAAU

AU @UAU(DRAW)

(CNTR)

(Calculates the center.)

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