Texas TI-86 用户手册

15EQSOLV.DOC   TI-86, Chap 15, US English   Bob Fedorisko   Revised: 02/13/01 2:34 PM   Printed: 02/13/01 3:04 PM   Page 211 of 12

15EQSOLV.DOC   TI-86, Chap 15, US English   Bob Fedorisko   Revised: 02/13/01 2:34 PM   Printed: 02/13/01 3:04 PM   Page 211 of 12

The root finder solves up to 30th-order real or complex polynomials.

�   Display the 

POLY

 order screen.

�   Enter an integer between 2 and 30. The

coefficients-entry editor is displayed with the
equation across the top, the coefficient
prompts along the left side, and the 

POLY

ENTRY

 menu on the bottom.

- v

 b

�   Enter a real or complex value (or an expression

that resolves to one) for each coefficient.

To clear all coefficients, select 

 from the

POLY

 

ENTRY

 menu.

 # 

 # 

# 

 # 

�   Solve the equation. The roots of the polynomial

are calculated and displayed. Results are not
stored to variables and you cannot edit them.
Also, the 

POLY

 

RESULT

 menu is displayed.

Results can be complex numbers.

*

The 

POLY

 coefficients are not

variables.

You can display other menus
in the coefficients-entry
editor.

Ellipses indicate that a value
continues beyond the screen.
Press 

"

 and 

!

 to scroll the

value.