HP 49g Graphing Calculator - Manual (Page 177)

RREFMOD
Type: Command
Description: Performs modular row-reduction to echelon form on a
matrix, modulo the current modulus.
Access: Catalog,
{CAT)
Input: A matrix.
Output: The modular row-reduced matrix. The modulo value is
set using the Modes CAS input form.
Flags: Exact mode must be set (flag -105 clear).
Numeric mode must not be set (flag -03 clear).
SERIES
Type: Command
Description: For a given fimction, computes Taylor series, asymptotic
development and limit at finite and infinite points.
Access: Calculus,
0{M£) LIMITS & SERIES
Input: Level 3/Argument 1: The function/(.r)
Level 2/Argument 2: The variable if the limit point is 0, or
an equation x = a if the limit point is a.
Level 1/Argmnent 3: The order for the series expansion.
Note the following points:
e The minimum value is 2, and the maximum value is
20.
® If the order is a positive or negative real number, the
series is imidirectional.
® For bidirectional series expansions, you need to give
the order as a binary integer, for example, #5d.
Output: Level 2/Item 1: A list containing the bidirectional limit,
an expression approximating the function near the limit
point, and the order of the remainder. These are
expressed in terms of a small parameter h.
Level 1/Item 2: An expression for h in tenns of the
original variable.
Flags: Exact mode must be set (flag -105 clear).
Numeric mode must not be set (flag -03 clear).
Page 14-54 Computer Algebra Commands