beautypg.com

Casio fx-9750G PLUS User Manual

Page 184

background image

156

u

u

u

u

u

To draw a tangent in the RUN or PRGM Mode

The following is the command syntax for drawing a tangent in these modes.

Tangent , <

x

-coordinate>

• Use the variable data (VARS) menu to specify the function to be graphed.

Example

To draw a line that is tangent to point (

x

= 2,

y

= 0) of

y

=

x

(

x

+ 2)

(

x

– 2)

1. In the RUN Mode, display the sketch menu, press 2 (Tang), and then

perform the following input.

J4

(GRPH)1(Y)b,c

2. Press w to draw the tangent line.

k

k

k

k

k

Line Normal to a Curve

[Sketch]-[Norm]

With this function you can draw a line that is normal to the curve at a specific
point.

• A line that is normal to the curve at a given point is one that is perpendicular to

the tangent line at that point.

u

u

u

u

u

To draw a line normal to a curve in the GRAPH or TABLE Mode

Example

To draw a line that is normal to the curve at point (

x

= 2,

y

= 0) of

y

=

x

(

x

+ 2)(

x

– 2)

1. After graphing the function, display the sketch menu and press 3 (Norm).

2. Use the cursor keys to move the pointer the position of the point where you

want to draw the line.

10 - 2

Graphing with the Sketch Function

P.30

This manual is related to the following products: