HP 32SII Equations with (i), 13–24Programming Techniques

 ! L Stores loop–control number in i.

The next routine is L, a loop to collect all 12 known values for a 3x3 coefficient matrix (variables A – I) and the three constants (J – L) for the equations.

Program Lines:

  

 "!1L2

   L

 !   ! 

Description:

This routine collects all known values in three equations.

Prompts for and stores a number into the variable addressed by i.

Adds 1 to i and repeats the loop until i reaches 13.012.

When i exceeds the final counter value, execution branches back to A.

Label J is a loop that completes the inversion of the 3 ⋅ 3 matrix.

Program Lines:

  

 !ª1L2    L  !   !

Description:

This routine completes inverse by dividing by determinant.

Divides element.

Decrements index value so it points closer to A Loops for next value.

Returns to the calling program or to  !.

Equations with (i)

You can use (i) in an equation to specify a variable indirectly. Notice that 1L2 means the variable specified by the number in variable i (an indirect reference), but that i or 1L2 means variable i.

The following program uses an equation to find the sum of the squares of variables A through Z.

Program Lines:	Description:
  	Begins the program.
  	Sets equations for execution.

13–24 Programming Techniques

File name 32sii-Manual-E-0424
Printed Date : 2003/4/24	Size : 17.7 x 25.2 cm