Euler, Exlr – HP 49g Graphing Calculator User Manual
Page 141
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EULER
Type:
Function
Description:
For a given integer, retimrs the niunber of integers less
than the integer that are co-prime with the integer.
(Euler’s 4> fimction.)
Access:
RiliTH)
INTEGER
Input:
A non-negative integer.
Output:
The number of positive integers, less than, and co-prime
with, the integer.
Flags:
Exact mode must be set (flag -105 clear).
Numeric mode must not be set (flag -03 clear).
EXLR
Type:
Command
Description:
Returns the left- and right-hand sides of an equation as
discrete expressions.
Access:
Catalog, (Rf)
Input:
An equation.
Output:
Level 2/Ai'gument 1: Tire expression to the left of the “=”
sign in the original equation.
Level 1/Argument 2: The expression to the right of the
sign in the original equation
Flags:
Exact mode must be set (flag -105 clear).
Numeric mode must not be set (flag -03 clear).
Example:
Split the following equation into its two component
expressions:
sin(.r)=5a'+?/
Command:
E X L R ( S I N ( X ) = 5 * X + Y )
Result:
{ S I N ( X ) 5 * X + Y ]
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Computer Algebra Commands