3-3-6

Storing Functions

uTo save an expression from the message box to the Graph Editor window

(1)Tap the Graph window to make it active.

(2)Perform a Trace operation (see “3-7 Using Trace”) or any other operation that causes the message box to appear.

(3)Tap inside the message box to select the entire expression or drag the stylus across the part of the expression you want to select.

(4)Tap G.

(5)Tap the Graph Editor window to make it active.

(6)Select the sheet and tap the line where you want to save the expression, which moves the cursor there.

(7)Tap [Edit] and then [Paste].

(8)Press Eto store the expression.

Tip

•You can also drag the expression from the message box to the Graph Editor window. In this case, you must drop the expression into a line on the Graph Editor window that does not already contain an expression.

Editing Stored Functions

uTo edit a function

Example: To edit the function y = x

2

1

3

stored in line y2 of the Graph Editor to

 

– — x

 

y = x

 

2

 

 

3

 

 

2

3

 

 

 

 

 

– — x

 

 

 

 

 

 

 

3

 

 

 

 

 

(1) On the Graph Editor window, tap line y2.

 

 

 

 

 

 

 

1

(2) Tap the area immediately to the right of the numerator of — so the cursor is located

there.

 

 

 

 

 

 

3

 

 

 

 

 

 

 

(3)Press Kand then 2to edit the fraction.

(4)Press Eto store the edited version of the function.

uTo delete a function

(1)On the Graph Editor window, select the sheet that contains the function you want to delete.

(2)Tap the function you want to delete so the cursor is located anywhere inside it.

(3)Tap [Edit] and then [Select All].

(4)Press K.

• This deletes the selected function.

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