HP 33s 15–30, 15–30 Mathematics Programs

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