Operation Manual

DRAW
Operations 8-7
8208DRAW.DOC TI-82, Chapter 8, English Bob Fedorisko Revised: 02/09/01 12:23 PM Printed:
02/09/01 3:30 PM Page 7 of 16
Drawing Functions and Inverses
DrawF (draw function) draws a function on the current graph. DrawInv (draw
inverse) draws an inverse of a function on the current graph. Both instructions
must be entered on the Home screen or in the program editor.
Drawing a Function
DrawF
(draw function) (
DRAW DRAW
item
6
) is not an interactive
operation. It draws
expression
as a function in terms of
X
on the current
graph.
DrawF
expression
For example, if
Y
1
=.2X
3
–2X+6
is the only selected function,
DrawF Y
1
–5
plots
Y
1
and draws the function
Y
1
–5
:
Note: A list cannot be used in
expression
to draw a family of curves.
Drawing an Inverse of a Function
DrawInv
(draw inverse) (
DRAW DRAW
item
8
) is not an interactive
operation. It draws the inverse of an
expression
in terms of
X
on the
current graph. You must be in
Func
MODE
.
DrawInv
expression
For example, if
Y
1
=.2X
3
–2X+6
is the only selected function,
DrawInv Y
1
plots
Y
1
and draws its inverse: