Simp2; Simplify - HP 48gII Advanced User's Reference Manual

Input: An algebraic expression.
Output: A list containing, the points where the expression changes sign, and between each pair of
points, the sign of the expression between those points.
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: Show the ranges of values of x for which the expression 2-x
Command:
SIGNTAB(2 – X^2)
Result:
-
{ ' ' – '- 2' + ' 2' – '+ ' }
See also: TABVAR

SIMP2

Type: Command
Description: Simplifies two objects by dividing them by their greatest common divisor.
Arithmetic, !Þ L
Access:
Input: Level 2/Argument 1: The first object.
Level 1/Argument 2: The second object.
Output: Level 2/Item 1: The first object divided by the greatest common divisor.
Level 1/Item 2: The second object divided by the greatest common divisor.
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: Divide the following expressions by their greatest common divisor:
3 2
x + 6x
3
x – 7x –
Command:
SIMP2(X^3+6*X^2+11*X+6, X^3-7*X-6)
Result:
{X+3,X-3}
See also: EGCD

SIMPLIFY

Type: Command
Description: Simplifies an expression.
!Ú
Access:
Input: An expression
Output: An equivalent simplified expression. SIMPLIFY follows an extensive built-in set of rules, but
these might not give exactly the simplification the user expects.
Flags: Exact mode must be set (flag –105 clear).
Numeric mode must not be set (flag -3 clear).
Example: Simplify
Command:
SIMPLIFY((SIN(3*X)+SIN(7*X))/SIN(5*X))
Result:
4*COS(X)^2 - 2
See also: COLLECT, EXPAND
4-66 Computer Algebra Commands
+ 11 x + 6
6
L
REWRITE
SIN 3 X + SIN 7 X
--------------------------------------------------------- -
SIN 5 X
is positive and negative.
2