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HP 35s. Quadratic Equation Solver (with complex solutions support)

Posted by Pablo P (Spain) on 2 July 2010, 3:53 p.m.

HP 35s - QUADRATIC EQUATION SOLVER (WITH COMPLEX SOLUTIONS SUPPORT)

Table of Contents
=================
1 Using the program 
2 Program listing 
3 Registers 
4 Revision 

1 Using the program 
~~~~~~~~~~~~~~~~~~~~

  Execute the program: XEQ Q ENTER.
  Enter A, B and C according to the equation Ax^2+Bx+C=0.
  It will show both solutions in x and y registers.

2 Program listing 
~~~~~~~~~~~~~~~~~~

  Line   Instruction  
 ------+-------------
  Q001   LBL Q        
  Q002   CF 10        
  Q003   INPUT A      
  Q004   INPUT B      
  Q005   INPUT C      
  Q006   -B÷(2xA)     
  Q007   ENTER        
  Q008   ENTER        
  Q009   B^2-4xAxC    
  Q010   x>=0?        
  Q011   GTO Q017     
  Q012   +/-          
  Q013   sqrt         ;press k key
  Q014   i            
  Q015   x            
  Q016   GTO Q018     
  Q017   sqrt         
  Q018   2xA          
  Q019   ÷            
  Q020   +            
  Q021   x<>y         
  Q022   LASTx        
  Q023   -            
  Q024   RTN          

  93 Bytes

3 Registers 
~~~~~~~~~~~~

  Register   Use              
 ----------+-----------------
  A          x^2 coefficent   
  B          x^1 coefficent   
  C          x^0 coefficient  
  

4 Revision 
~~~~~~~~~~~

  05/18/10 - Initial release.
  06/25/10 - Smaller program, D E F variebles not used. 

Edited: 2 July 2010, 3:56 p.m.

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