A through E

Coefficients of polynomial; scratch.

F

Order of polynomial; scratch.

G

Scratch.

H

Pointer to polynomial coefficients.

X

The value of a real root, or the real part of complex root

i

The imaginary part of a complex root; also used as an index

 

variable.

Example 1:

Find the roots of x5 x4 – 101x3 +101x2 + 100x – 100 = 0.

Keys:

Display:

Description:

(In RPN mode)

 

 

XP

@

 

value

5 g

@

 

value

1 ^g

@

 

value

101 ^g

@

 

value

101 g

@

 

value

100 g

@

 

value

100 ^g

%/

 

)

g%/

.)

g%/

.)

g%/

)

g%/

)

Starts the polynomial root finder; prompts for order.

Stores 5 in F; prompts for E.

Stores –1 in E; prompts for D.

Store –101 in D. prompts for C.

Stores 101 in C; prompts for B.

Stores 100 in B; prompts for A.

Stores –100 in A; calculates the first root.

Calculates the second root.

Displays the third root.

Displays the fourth root.

Displays the fifth root.

15–30Mathematics Programs

Page 252
Image 252
HP 33s Scientific manual 15-30Mathematics Programs