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propFrac()
Catalog >
propFrac(
rational_expression
,
Var
)
returns
the sum of proper ratios and a polynomial
with respect to
Var
. The degree of
Var
in
the denominator exceeds the degree of
Var
in the numerator in each proper ratio.
Similar powers of
Var
are collected. The
terms and their factors are sorted with
Var
as the main variable.
If
Var
is omitted, a proper fraction
expansion is done with respect to the most
main variable. The coefficients of the
polynomial part are then made proper with
respect to their most main variable first
and so on.
For rational expressions,
propFrac()
is a
faster but less extreme alternative to
expand()
.
You can use the
propFrac()
function to
represent mixed fractions and demonstrate
addition and subtraction of mixed fractions.
Q
QR
Catalog >
QR
Matrix
,
qMatrix
,
rMatrix
[
,
Tol
]
Calculates the Householder QR factorization
of a real or complex matrix. The resulting Q
and R matrices are stored to the specified
Matrix
. The Q matrix is unitary. The R
matrix is upper triangular.
Optionally, any matrix element is treated as
zero if its absolute value is less than
Tol
.
This tolerance is used only if the matrix has
floating-point entries and does not contain
any symbolic variables that have not been
assigned a value. Otherwise,
Tol
is ignored.
•
If you use
/·
or set the
Auto or
Approximate
mode to Approximate,
The floating-point number (9.) in m1 causes
results to be calculated in floating-point
form.
Alphabetical Listing
137
Содержание TI-Nspire CAS
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