This program was written by Walter Gray and is used here by permission.
This program is supplied without representation or warranty of any kind. The author and The Museum of HP Calculators therefore assume no responsibility and shall have no liability, consequential or otherwise, of any kind arising from the use of this program material or any part thereof.
determinant is written a b c d e f g h i and terms are entered in sequence a,b,c,d,e,f,g,h,i
Step 
Instructions 
Input Data/Units 
Keys 
Output Data/Units 
1 
Enter program 

2 
Enter the matrix 
a 
f PRGM R/S 


b 
R/S 


c 
R/S 

d 
R/S 

e 
R/S 

f 
R/S 

g 
R/S 


h 
R/S 

i 
R/S 
det 

4 
For new case, go to step 2 


1 2 3 3 4 4 = 2 5 6 6
LINE KEYS 00 01 STO 2 ; a in x reg 02 STO 5 03 R/S 04 STO 6 ; b in x reg 05 STO 3 06 R/S 07 STO 7 ; c in x reg 08 STO 4 09 R/S 10 STO x 6 ; d in x reg 11 STO x 4 12 R/S 13 STO x 5 ; e in x reg 14 STO x 7 15 RCL 6 16 STO  5 17 R/S 18 STO x 2 ; f in x reg 19 STO x 3 20 RCL 2 21 STO  4 22 RCL 7 23 STO  3 24 R/S 25 STO x 3 ; g in x reg 26 R/S 27 STO x 4 ; h in x reg 28 R/S 29 STO x 5 ; i in x reg 30 RCL 5 31 STO 0 32 RCL 3 33 STO + 0 34 RCL 4 35 STO + 0 36 RCL 0 37 gto 00 ; display results
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