HP15C Owner's Handbook - Pages 138-140

Description

Solving the following system of linear equations:

3.8x1 + 7.2x2 = 16.5
1.3x1 - 0.9x2 = -22.1

GSB 1 - The program will enter the built-in example data.

-11.2887 is returned.
After a delay
8.2496 is returned.

GSB 1 - Restarts the program.

Matrices [A], [B] and [C] can be read out by pressing GSB A, B, or C

John Patterson
jepattersonatactrix.co.nz
http://www.jepspectro.com

Program Resources

Labels

Name Description
 A Read the matrix elements in [A]
 B Read the matrix elements in [B]
 C Read the matrix elements in [C]
 1 GSB 1 starts this program.
.1 Matrix [A] readout loop
.2 Matrix [B] readout loop
.3 Matrix [C] readout loop

Flags

Number Description
8 CF8 Clear complex number flag

Program

Line Display Key Sequence Line Display Key Sequence Line Display Key Sequence
000 029 u 44 11 USER STO A 058 42 31 f PSE
001 42;21; 1 f LBL 1 030 31 R/S 059 u 45 13 USER RCL C
002 43; 5; 8 g CF 8 031 2 2 060 42 31 f PSE
003 42;16; 0 f MATRIX 0 032 36 ENTER 061 u 45 13 USER RCL C
004 2 2 033 1 1 062 31 R/S
005 36 ENTER 034 42;23;12 f DIM B 063 43 32 g RTN
006 42;23;11 f DIM A 035 45;16;12 RCL MATRIX B 064 42;21;11 f LBL A
007 42;16; 1 f MATRIX 1 036 42 31 f PSE 065 42;16; 1 f MATRIX 1
008 45;16;11 RCL MATRIX A 037 1 1 066 42;21; .1 f LBL . 1
009 42 31 f PSE 038 6 6 067 42 31 f PSE
010 3 3 039 48 . 068 u 45 11 USER RCL A
011 48 . 040 5 5 069 22 .1 GTO . 1
012 8 8 041 42 31 f PSE 070 43 32 g RTN
013 42 31 f PSE 042 u 44 12 USER STO B 071 42;21;12 f LBL B
014 u 44 11 USER STO A 043 2 2 072 42;16; 1 f MATRIX 1
015 7 7 044 2 2 073 42;21; .2 f LBL . 2
016 48 . 045 48 . 074 42 31 f PSE
017 2 2 046 1 1 075 u 45 12 USER RCL B
018 42 31 f PSE 047 16 CHS 076 22 .2 GTO . 2
019 u 44 11 USER STO A 048 42 31 f PSE 077 43 32 g RTN
020 1 1 049 u 44 12 USER STO B 078 42;21;13 f LBL C
021 48 . 050 31 R/S 079 42;16; 1 f MATRIX 1
022 3 3 051 45;16;12 RCL MATRIX B 080 42;21; .3 f LBL . 3
023 42 31 f PSE 052 42 31 f PSE 081 42 31 f PSE
024 u 44 11 USER STO A 053 45;16;11 RCL MATRIX A 082 u 45 13 USER RCL C
025 48 . 054 42 31 f PSE 083 22 .3 GTO . 3
026 9 9 055 42;26;13 f RESULT C 084 43 32 g RTN
027 16 CHS 056 10 ÷
028 42 31 f PSE 057 45;16;13 RCL MATRIX C