Page 13-9
•
Press
L
@PICT @CANCL
$
to return to normal calculator display.
Notice that the slope and tangent line that you requested are listed in
the stack.
Function DOMAIN
Function DOMAIN, available through the command catalog (
‚N
),
provides the domain of definition of a function as a list of numbers and
specifications. For example,
indicates that between –
∞
and 0, the function LN(X) is not defined (?), while
from 0 to +
∞
, the function is defined (+). On the other hand,
indicates that the function is not defined between –
∞
and -1, nor between 1
and +
∞
. The domain of this function is, therefore, -1<X<1.
Function TABVAL
This function is accessed through the command catalog or through the GRAPH
sub-menu in the CALC menu. Function TABVAL takes as arguments a function
of the CAS variable, f(X), and a list of two numbers representing a domain of
interest for the function f(X). Function TABVAL returns the input values plus the
range of the function corresponding to the domain used as input. For
example,