HP 33s 15–27, C, J + L, K + M, J – L, K – M, J2 -– a2, J2 -–a2 +y0, Calculates sign of C, Stores 1 or JK – a1/2, Stores C with proper sign

!  ! ! % 

J2 − a2 + y0 .

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Program Lines: (In RPN mode)

 !      !ª      º  .   -   -   º  !º      -      -   % !

Description

Stores 1 or JK – a1/2.Calculates sign of C.

J.

J2

J2 -– a2.J2 -– a2 +y0.C =Stores C with proper sign.

J.

J + L.

K.

K + M.Calculate and display two roots of the fourth–order polynomial.

J.

J – L.

K.

K – M.Checksum and length: 539D 171

Starts routine to calculate and display two roots. Uses quadratic routine to calculate two roots.

Checksum and length: 410A 6

  

    ! %  #$ %   

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Starts routine to display two real roots or two complex roots.

Gets the first real root. Stores the first real root.

Displays real root or real part of complex root.Gets the second real root or imaginary part of complex root.Were there any complex roots?

Mathematics Programs 15–27