Texas Instruments TI-86 - Manual (Page 24)

12
Quick Start
00QWIKST.DOC TI-86, Quick Start, US English Bob Fedorisko Revised: 02/13/01 1:51 PM Printed: 02/13/01 2:59 PM Page 12 of 14
ᕣ Trace the function y2 . As you trace, the
displayed y value is the solution for
5(cos x) at the current x value, which also
is displayed on the screen.
" and !
Evaluating y for a Specific x Value (During a Trace)
ᕡ Enter a real number (or an expression that
resolves to a real number) that is within
the dimensions of the current graph
screen. When you enter the first character,
the
x= prompt is displayed.
6
ᕢ Evaluate y2 at x=6 . The trace cursor
moves directly to the solution. The y value,
or solution of the equation at x , is
displayed on the screen.
b
Changing a Window Variable Value
ᕡ Display the GRAPH menu. 6
ᕢ Select WIND from the GRAPH menu to
display the window editor.
(continued)
' The window variables values
determine the dimensions of
the graph screen.