HP 32SII - Manual (Page 251)

Mathematics Programs 15–25
File name 32sii-Manual-E-0424
Printed Date : 2003/4/24 Size : 17.7 x 25.2 cm
Program Lines: Description
 -+. b
2
= –a
2
.
 !  Stores b
2
.
   a
3
.
 º  a
3
a
1
.


 º  4a
0
.
 . b
1
= a
3
a
1
– 4a
0
.

!  Stores b
1
.
  To enter lines D21 and D22
  Press 4 {  3.
 
% 
 ª


 - Creates 7.004 as a pointer to the cubic coefficients.

%  Solves for real root and puts a
0
and a
1
for
second–order polynomial on stack.
 ¶ Discards polynomial function value.
 %  Solves for remaining roots of cubic and stores roots.

 % Gets real root of cubic.
 !  Stores real root.
  @
 Complex roots ?
 !  Calculate four roots of remaining fourth–order
polynomial.
   If not complex roots, determine largest real root (y
0
)
 º6¸@
 º65¸

 
 º6¸@
 º65¸

!  Stores largest real root of cubic.
Checksum and length: C333 060.0

   Starts fourth–order solution routine.

 

 ! ª  J = a
3
/2