Section 12: Calculating with Matrices 149
While the key used for any matrix operation that stores a result in the result
matrix is held down, the descriptor of the result matrix is displayed. If the
key is released within about 3 seconds, the operation is performed, and the
descriptor of the result matrix is placed in the X-register. If the key is held
down longer, the operation is not performed and the calculator displays
null
.
Copying a Matrix
To copy the elements of a matrix into the corresponding elements of
another matrix, use the
O
>
sequence:
1.
Press
l
>
followed by the letter key specifying the
matrix to be copied. This enters the descriptor of the matrix into
the display.
2.
Press
O>
followed by the letter key specifying the
matrix to be copied into.
If the matrix specified after
l
does not have the same dimensions as the
matrix specified after
O
, the second matrix is redimensioned to agree
with the first. The matrix specified after
O
need not already be
dimensioned.
Example
: Copy matrix
A
from the previous example into matrix
B
.
Keystrokes
Display
l>
A
A
2
3
Displays descriptor of
matrix to be copied.
O>
B
A
2
3
Redimensions matrix
B
and
copies
A
into
B
.
l>
B
b
2
3
Displays descriptor of new
matrix
B
.
One-Matrix Operations
The following table shows functions that operate on only the matrix
specified in the X-register. Operations involving a single matrix plus a
number in another stack register are described under Scalar Operations
(page 151).
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 ...