HP 33s - Manual (Page 244)

15–22 Mathematics Programs
Program Listing:
Program Lines:
(In RPN mode)
Description
Defines the beginning of the polynomial root finder
routine.
"! Prompts for and stores the order of the polynomial.
! L Uses order as loop counter.
Checksum and length: 5CC4 9
Starts prompting routine.
"!1 1L2 2 Prompts for a coefficient.
L Counts down the input loop.
! Repeats until done.
! L Uses order to select root finding routine.
!1 1L2 2 Starts root finding routine.
Checksum and length: 588B 21
Evaluates polynomials using Horner's method, and
synthetically reduces the order of the polynomial using
the root.
! L Uses pointer to polynomial as index.
Starting value for Horner's method.
Checksum and length: 0072 24
Starts the Horner's method loop.
! Saves synthetic division coefficient.
º % Multiplies current sum by next power of x.
-1 1L2 2 Adds new coefficient.
L Counts down the loop.
! Repeats until done.
!
Checksum and length: 2582 21
Starts solver setup routine.
! Stores location of coefficients to use.