Texas TI-86 用户手册

   

08POL.DOC   TI-86, Chap 8, US English   Bob Fedorisko   Revised: 02/13/01 2:26 PM   Printed: 02/13/01 3:02 PM   Page 122 of 8

08POL.DOC   TI-86, Chap 8, US English   Bob Fedorisko   Revised: 02/13/01 2:26 PM   Printed: 02/13/01 3:02 PM   Page 122 of 8

08POL.DOC   TI-86, Chap 8, US English   Bob Fedorisko   Revised: 02/13/01 2:26 PM   Printed: 02/13/01 3:02 PM   Page 122 of 8

Finds the numerical derivative (slope) of a function at a point

The distances calculated by 

 and 

 are distances in the rectangular coordinate plane.

 and 

 are independent of the 

 or 

 format.

At a point where the derivative is undefined,

 will draw the line, but no result is

displayed or stored in 

.

When the trace cursor is not active, the 

GRAPH

 menu item 

 evaluates selected polar

equations directly on the graph for a given value of 

. 

 in a program or from the home

screen returns a list of 

 values.

The 

GRAPH

 

DRAW

 menu items work the same in 

 graphing as in 

 graphing. 

DRAW

instruction coordinates in 

 graphing mode are the x- and y-coordinates of the graph

screen. 

 is not available in 

 graphing mode.

The other 

GRAPH

 

MATH

menu items are the same as
described in Chapter 6.