Texas Instruments TI-86 - Manual (Page 117)

Chapter 6: Graph Tools
105
06TOOLS.DOC TI-86, Chap 6, US English Bob Fedorisko Revised: 02/13/01 2:23 PM Printed: 02/13/01 3:01 PM Page 105 of 22 06TOOLS.DOC TI-86, Chap 6, US English Bob Fedorisko Revised: 02/13/01 2:23 PM Printed: 02/13/01 3:01 PM Page 105 of 22
HORIZ Draws a horizontal line, which you can move to any displayed y value
CIRCL Draws a circle with a center point and radius you specify with the cursor
PEN Draws the path of the cursor as you move it on the graph screen
PTON Turns on the point at the cursor location
PTOFF Turns off the point at the cursor location
PTCHG Changes the on àoff status of a point at the cursor location
CLDRW Clears all drawings from the graph screen; replots the graph
TEXT Draws characters on the graph at the cursor location
Drawing a Line Segment
ᕡ Select LINE from the GRAPH DRAW menu. The
graph is displayed.
ᕢ Define one segment endpoint with the cursor.
6 /
' '
" # ! $
b
ᕣ Define the other endpoint of the segment. As
you move the cursor, a line anchored at the
first defined endpoint extends to the cursor.
ᕤ Draw the line.
" # ! $
b
To draw more line segments, repeat steps 2 and 3; to cancel LINE , press :.
In the example, the functions
y(x)=x^3+.3x2
N 4x and
y(x)=x2+3x N 3 are selected.