Ptayl, Quot – HP 49g Graphing Calculator User Manual
Page 172
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Psi
Type:
Function
Description:
Calculates the digamma function in one point. The
digainina fimction is the derivative of the natiual
logarithm (In) of the gamma fimction. The fimction can
be represented as follows:
T(z)
=
^(Inr(z))
= ^
dz
F(z)
Access:
Catalog, (QM)
Input:
Level 2/Argiiment 1: A complex expression
Level 1/Argument 2: A non-negative integer.
Output:
The digamma fimction at the specified point.
Flags:
Exact mode must be set (flag -105 clear).
Numeric mode must not be set (flag -03 clear).
PTAYL
Type:
Fimction
Description:
Returns the Taylor polynomial at x = a for a specified
polynomial.
Access:
Arithmetic, RiBlH]
polynomial
Input:
Level 2/Argument 1: A polynomial, P.
Level 1/Argument 2: A niunber, a.
Output:
A polynomial, Q such that Q(x - a)=P(x).
Flags:
Exact mode must be set (flag -105 clear).
Numeric mode must not be set (flag -03 clear).
QUOT
Type:
Function
Description:
Returns the quotient part of the Euclidean division of
two polynomials.
Access:
Arithmetic,
R(MH)
polynomial
Input:
Level 2/Argument 1: The numerator polynomial.
Level 1/Argument 2: The denominator polynomial.
Computer Algebra Commands
Page 14-49