HP HP-67 - Page 206

202 Subroutines
Press
Display
0
a
018
31
25
15
0
8
019
31
22
08
1
zzg
=
z:
Calculates
—_
o
2
_
G
=
=
_b\/T_‘:“‘*ac
=1,
8
023
71
a
024
81
@
(5
8
026
31
25
08
2
027
34
02
028
42
2
029
34
02
a8
030
32
54
Subroutine
places
—b
in
€S
—D
1
037
34
01]
ster
an
;
031
34
01
Y-register
and
Vb?
—4ac
T
032
34
03
in
X-register,
ready
for
0
033
71
addition
or
subtraction.
4
034
04
a
035
71
=
036
1
o
037
31
54
0
o
038
35
22
To initialize the program, you key ina and press £, key in b and press
[, and key in ¢ and press [ . Then, to find root r,, press 2. To find
root r,, press & .
Run the program now to find the roots of the equation x2 + x —6 =0;
of 3x2 +2x — 1 = 0.
To run the program:
Slide the W/PRGM-RUN switch wrram [l run to RUN.