HP 15c Collector's Edition User Manual

150 Section 12: Calculating with Matrices
One-Matrix Operations:
Sign Change, Inverse, Transpose, Norms, Determinant
Keystroke(s)
Result in
X-register
Effect on Matrix
Specified in
X-register
Effect on
Result Matrix
” No change. Changes sign of
all elements.
None.
‡
⁄
(´ ⁄ in
User Mode)
Descriptor of
result matrix.
None.
‡
Inverse of
specified
matrix.
§
´ > 4 Descriptor of
transpose.
Replaced by
transpose.
None.
‡
´ > 7
Row norm of
specified matrix.
*
None. None.
´ > 8
Frobenius or
Euclidean norm
of specified
matrix.
†
None. None.
´ > 9
Determinant of
specified matrix.
None.
‡
LU
decomposition
of specified
matrix.
§
*
The row norm is the largest sum of the absolute values of the elements in each row
of the specified matrix.
†
The Frobenius or Euclidean norm is the square root of the sum of the squares of all
elements in the specified matrix.
‡
Unless the result matrix is the same matrix specified in the X-register.
§
If the specified matrix is a singular matrix (that is, one that doesn’t have an inverse),
then the HP 15c modifies the LU form by an amount that is usually small compared
to round-off error. For ⁄, the calculated inverse is the inverse of a matrix close
to the original, singular matrix. (Refer to the HP 15c Advanced Functions Handbook
for further information.)

HP 15c Collector's Edition Specifications

General

Brand	HP
Model	15c Collector's Edition
Category	Calculator
Language	English