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Mathematics, Matrix functions, Number alteration – HP 15c User Manual

Page 265

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Function Summary and Index 265

matrices or of one
matrix and a scalar.
Stores in result matrix
(page 152-155).

÷ For two matrices,
multiplies inverse of
matrix in X by matrix
in Y. For only one
matrix, if matrix in Y,
divides all elements of
matrix by scalar in X; if
matrix in X, multiplies
each element of inverse
of matrix by the scalar
in Y. Stores in result
matrix (pages 152-
155)
.

“ changes sign of
all elements in matrix
specified in X-register
(page 150).

> {0 through 9}
Matrix operations.

> 0 Dimensions
all matrices to 0×0
(page 143).

> 1 Sets row and
column numbers in R

0

and R

1

to 1 (page 143).

> 2 Complex
transform: Z

P

to

(page 164).

> 3 inverse

complex transform.
to Z

P

(page164).

> 4 Transpose X
to X

T

(page 150).

> 5 Transpose
multiply: Y and X to
Y

T

X (page 154).

> 6 Calculates
residuals in result
matrix (page 159).

> 7 Calculates
row norm of matrix
specified in X-register
(page 150).

> 8 Calculates
Frobenius norm of
matrix specified in X-
register (page 150).

> 9 Calculates
determinant of matrix
specified in X-register
(also does LU
decomposition of the
matrix) (page 150).

c Transforms
matrix stored in
"partitioned form" (Z

P

)

to "complex form" (Z

C

)

(page 162).

p Transforms
matrix stored in
"complex form" (Z

C

) to

"partitioned form" (Z

P

)

(page 162).

~ T 0 T 5
T 6 Conditional
tests for matrix
descriptors in the X- or
X- and Y-registers.
~ and T 0 (x
0) test the quantity in
the X-register for zero.
Matrix descriptors are
considered nonzero.
T 5 (x = y) and
T
6 (x ≠ y) test if the
descriptors in X and Y
are the same. The result
affects program
execution: skip (one
line) if false (page
174)
.

Number Alteration

a Yields absolute
value of number in
display (page 24).

q Leaves only
fractional portion of
number in display
(X-register) by
truncating integer
portion (page 24).

‘ Leaves only
integer portion of
number in display (X-