Operation Manual

Chapter 8: Draw Instructions 123
Chapter 8:
Draw Instructions
Getting Started: Drawing a Tangent Line
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 = for the function Y=sin(X).
1. Before you begin, press z and set the decimal setting to
4 places
. Select Radian and Function (if necessary).
2. Press o to display the Y= editor. Press ˜„¤ to
store
sin(X) in Y1.
3. Press q
7 to select 7:ZTrig, which graphs the equation
in the
Zoom Trig window.
4. Press y<
5 to select 5:Tangent(. The tangent
instruction is initiated.
• Press t
b to change the color and line style
(use the default thick line style).
2
2
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