User Guide

Chapter 8: Draw Instructions 121

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 select

4, Radian

and

Func, 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.

5. Press y C

2 ¤ ¥ 2.

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