Section 12: Calculating with Matrices 145
Keystrokes
Display
´
>
1
Sets beginning row and column
numbers in R
0
and R
1
to 1.
(Display shows the previous
result.)
´
U
Activates User mode.
1
O
A
A 1,1
Row 1, column 1 of
A
.
(Displayed momentarily while
A
key held down.)
1.0000
Value of
a
11
.
2
O
A
2.0000
Value of
a
12
.
3
O
A
3.0000
Value of
a
13
.
4
O
A
4.0000
Value of
a
21
.
5
O
A
5.0000
Value of
a
22
.
6
O
A
6.0000
Value of
a
23
.
lA
A 1,1
Recalls element in row 1,
column l. (R
0
and R
1
were reset
in preceding step.)
1.0000
Value of
a
11
.
l
A
2.0000
Value of
a
12
.
l
A
3.0000
Value of
a
13
.
l
A
4.0000
Value of
a
21
.
l
A
5.0000
Value of
a
22
.
l
A
6.0000
Value of
a
23
.
´
U
6.0000
Deactivates User mode.
Checking and Changing Matrix Elements Individually
The calculator provides two ways to check (recall) and change (store) the
value of a particular matrix element. The first method uses storage registers
R
0
and R
1
in the same way as described above – except that the row and
column numbers aren't automatically changed when User mode is
deactivated. The second method uses the stack to define the row and
column numbers.
Summary of Contents for HP-15C
Page 1: ...HP 15C Owner s Handbook HP Part Number 00015 90001 Edition 2 4 Sep 2011 ...
Page 17: ...Part l HP 15C Fundamentals ...
Page 64: ......
Page 65: ...Part ll HP 15C Programming ...
Page 118: ...118 ...
