(15C) 3 Equations with 3 Unknowns

[Eddie W. Shore]

It is a great program.

I kind of had to redo it a bit because of the USER mode and how I couldn't get the pointer (R0,R1) to advance on the HP 15C Collector's Edition.

Code:

  (34 steps)
LBL D
MATRIX 0
MATRIX 1
3
ENTER
DIM A
R/S

LBL 1
u STO A  (u = USER mode)
CLx
R/S
GTO 1

LBL E
3 
ENTER 
1
DIM B
R/S
u STO B
R/S
u STO B
R/S
u STO B
RESULT C

RCL MATRIX B
RCL MATRIX A
÷
R/S

u RCL C
R/S
u RCL C
R/S
u RCL C
RTN