Reference Guide

3-80 Full Command and Function Reference
Flags: Numerical Results (–3), Exact Mode (–105)
Input/Output:
Level 1/Argument 1 Level 1/Item 1
x
→
x
'symb
1
'
→
'symb
2
'
(x, y)
→
(x, y)
Example 1: 'A^(B+C)' EXPAN returns 'A^C*A^B'
Example 2: '(X+Y)^2' EXPAN returns 'X^2+2*Y*X+Y^2'
See also: COLCT, EXPAND, ISOL, QUAD, SHOW
EXPAND
Type: Command
Description: Expands and simplifies an algebraic expression. This command is similar to the EXPAN
command (which is included to ensure backward-compatibility with the HP 48-series calculators),
except that EXPAND does more a more in-depth analysis and often does a better job at
simplifying an expression than EXPAN.
Access: Algebra, …×or P ALG
Input: An expression, or an array of expressions.
Output: The expanded and simplified expression or array of expressions.
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: Simplify the following expression:
x
2
2x 1+ +( )
x 1+
-------------------------------
Command: EXPAND((X^2+2*X+1)/(X+1))
Result: X+1
See also: EXPAN
EXPANDMOD
Type: Function
Description: Expands and simplifies an algebraic expression, or an array of expressions, modulo the current
modulus.
Access: !Þ MODULO
Input: An expression, or an array of expressions.
Output: The expanded and simplified expression, or array of expressions, modulo the current modulus.
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: Expand the following expression and give the result modulo 3:
x
3
+
(
)
x
4
+
(
)
Command: EXPANDMOD((X+3)*(X+4))
Result: X^2+X