HP 33s User Manual page 250

Program Lines:
(In RPN mode)
  
  
  
 
Checksum and length: 96DA 30
  
  
  
  
  
 
  
  
Checksum and length: 748D 24
Flags Used:
Flag 0 is used to remember if the root is real or complex (that is, to remember the
sign of d ). If d is negative, then flag 0 is set. Flag 0 is tested later in the program to
assure that both the real and imaginary parts are displayed if necessary.
Remarks:
The program accommodates polynomials of order 2, 3, 4, and 5. It does not
check if the order you enter is valid.
The program requires that the constant term a
a is 0, then 0 is a real root. Reduce the polynomial by one order by factoring out
0
x .)
The order and the coefficients are not preserved by the program.
15–28
Mathematics Programs
Displays complex roots if any.
Stores second real root.
Displays second real root.
Returns to calling routine.
Starts routine to display complex roots.
Stores the imaginary part of the first complex root.
Displays the imaginary part of the first complex root.
Displays the real part of the second complex root.
Gets the imaginary part of the complex roots.
Generates the imaginary part of the second complex
root.
Stores the imaginary part of the second complex root.
Displays the imaginary part of the second complex
root.
0
Description
is nonzero for these polynomials. (If