Texas Instruments TI-83 Guide Book

8-2 DRAW Instructions
8308DRAW.DOC TI-83 international English Bob Fedorisko Revised: 02/19/01 12:29 PM Printed: 02/19/01 1:49
PM Page 2 of 20
Getting Started is a fast-paced introduction. Read the chapter for details.
Suppose you want to find the equation of the tangent line at X =
‡
2/2 for the
function Y = sinX.
Before you begin, select
Radian and Func
mode from the mode screen, if necessary.
1. Press
o
to display the
Y=
editor. Press
˜ „ ¤
to store
sin(X) in Y
1
.
2. Press
q
7 to select 7:ZTrig, which
graphs the equation in the Zoom Trig
window.
3. Press
y
[
DRAW
] 5 to select 5:Tangent(.
The tangent instruction is initiated.
4. Press
y
[
‡
] 2
¤ ¥
2.
5. Press
Í
. The tangent line is drawn; the
X value and the tangent-line equation are
displayed on the graph.
Getting Started: Drawing a Tangent Line

Texas Instruments TI-83 Specifications

General

Programming	TI-BASIC
Processor	Zilog Z80, 6 MHz
Weight	7.4 oz (210 g)
Display	96x64 pixels, monochrome LCD
Power Source	4 AAA batteries, 1 CR1616 or CR1620 for backup
Memory	32 KB RAM
Connectivity	2.5mm I/O port for linking with other TI calculators