Casio fx-9750G Sketch Function Manual do Utilizador descarregar pdf (Página 5)

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uTo draw a tangent in the RUN or PRGM Mode

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

Tangent <graph function>, <

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. Enter the RUN Mode, display the sketch menu, and then perform the following

input.

!4(Sketch)2(Tang)

J4(GRPH)

1(Y)b,c

2. Press w to draw the tangent line.

k Line Normal to a Curve

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.

uTo 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).

!4(Sketch)3(Norm)

Graphing with the Sketch Function 10 - 2

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