Qxa; Rclvx; Ref - HP 48gII Advanced User's Reference Manual

Description: Returns the quotient part of the Euclidean division of two polynomials.
Arithmetic, !Þ
Access:
Input: Level 2/Argument 1: The numerator polynomial.
Level 1/Argument 2: The denominator polynomial.
Output: The quotient of the Euclidean division.
Flags: Exact mode must be set (flag –105 clear).
Numeric mode must not be set (flag -3 clear).
Radians mode must be set (flag –17 set).
Example: Find the quotient of the division of
Command:
QUOT(X^3+6*X^2+11*X+6, X^2+5*X+6)
Result:
X+1
See also: REMAINDER, DIV2, IQUOT

QXA

Type: Command
Description: Expresses a quadratic form in matrix form.
!Ø
Access:
Input: Level 2/Argument 1: A quadratic form.
Level 1/Argument 2: A vector containing the variables.
Output: Level 2/Item 1: The quadratic form expressed in matrix form.
Level 1/Item 2: The vector containing the variables.
Flags: Exact mode must be set (flag –105 clear).
Numeric mode must not be set (flag -3 clear).
Radians mode must be set (flag –17 set).
Example: Express the following quadratic form in matrix form:
2
x + xy +
Command:
QXA(X^2+X*Y+Y^2, [X,Y])
Result:
{[[1,1/2][1/2,1]],[X,Y]}
See also: AXQ, GAUSS, SYLVESTER

RCLVX

Type: Command
Description: Returns the name or list of names stored in the current CAS variable. This is the same action
as recalling the contents of the variable VX in the CASDIR directory.
Catalog, ...µ
Access:
Input: None.
Output: Level 1/Item 1: The name of the current CAS variable.
See also: STOVX

REF

Type: Command
Description: Reduces a matrix to echelon form. This is a subdiagonal reduction (Gauss, not Gauss-Jordan).
Matrices, !Ø
Access:
Input: A real or complex matrix.
4-60 Computer Algebra Commands
POLYNOMIAL
, !Ú
QUADF MATRX
2
y
LINEAR SYSTEMS
!«
3 2
by
x + 6 x + 11 x + 6 x
2
.
+ 5x + 6