Pcar, Powmod – HP 49g Graphing Calculator User Manual
Page 169
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PCAR
Type:
Command
Description:
Returns the characteristic polynomial of an n x n
matrix.
Access:
Matrices,
R(MAlilS) EIGENVECTORS
Input:
A square matrix.
Output:
The characteristic polynomial of the matrix.
Flags:
Exact mode must be set (flag -105 clear).
Numeric mode must not be set (flag -03 clear).
Example:
Find the characteristic polynomial of the following
matrix:
5 8
16
4 1
8
_-4 -4
-11.
Command:
PCAR ( [
[5,
Result:
X"3 + 5 * X " ' 2 + 3 * X - 9
POWMOD
Type:
Fimction
Description:
Raises an object (number or expression) to the specified
power, and expresses the result modulo the current
modulus.
Access:
Arithmetic, RiSTH)
modulo
Input:
Level 2/Argmnent 1: The object.
Level 1/Argument 2: The exponent.
Output:
The result of the object raised to the exponent, modulo
the cmxent modulus.
Flags:
Exact mode must be set (flag -105 clear).
Numeric mode must not be set (flag -03 clear).
Page 14-46
Computer Algebra Commands